Instructables

Laughing Coke Can Prank

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This instructable details how to make a coke can prank (or any drinks can) that will laugh when picked up and tilted towards the mouth.

It's a great prank to play on friends/colleagues/family when you get a chance to swap out their drink for your rigged one!

I tried to make this ible as simple as possible to make it accessible to as many people as possible. Where I could I taped instead of soldered. Info in the steps should be transferable to most other noise making toys!

Required:

- drinks can
- toy that laughs
- tilt switch
- batteries
- electrical tape
- solder

Tools:

- wire strippers
- soldering iron
- hammer
- punch or nail
- hacksaw blade or scissors
- pliers
 
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Step 1: Opening up the can

Picture of Opening up the can
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Turn over the can. For items required in this step, see picture two.

With a punch or nail, pierce the bottom of the coke can. Wiggle it until the hole is wide enough to insert a hacksaw blade.

Gripping the hacksaw blade in the pliers (or your fingers if you're hardcore), cut a slit. Cut two more slits so the bottom of the can is divided into six. Once the hole is larger, using a strong pair of scissors may be easier than the hacksaw blade.

Carefully push the six tabs inwards to make a hole. Dividing the bottom of the can more is better, it will cause the rim to bend less and your can won't wobble then.

Step 2: Canibalise

Gut the toy of your choice. Mine laughs manically when you squeeze it. I cut off the flashing LED and saved it for another project and before continuing checked it fitted in the can.

Step 3: Power

Having cut away the battery holder that was too big to fit in the can, I taped two AA batteries together and connected them in series with a piece of wire and some tape. This will supply the circuit board with the 3V it needs. I attached this to the circuit board and pressed the button to check it worked.

Having checked it still works, detach the batteries.
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freeza362 years ago
you should include a video
pootiechang5 years ago
Adds a completely new meaning to "canned laughter"
lol
try  Pedobear-style Laughter.... or pedo seal, or pedo cat, or pedodog or pedofish.... pedo-tato, anyone?
Saturn V4 years ago
You should put something that vibrates on it instead of something to make sound.  That way, it spills all over them!
am1114 years ago
you know i did that except i rigged it to say hehehheheheheheheheh and it was a bash
Capt. Kidd4 years ago
I showed my cousin this and he did it on me when I was unsuspecting, switched my coke can for his when I took a piss. I nearly had a heart attack!



P.S. Why do you "take a piss" when you are giving the toilet your piss?
robinmitra15 years ago
you have exactly same computer table as me lol
Jayefuu (author)  robinmitra15 years ago
It didn't look so heavy before I decided to carry it back from B&Q! I was :(
i see you're from UK.....
first maplin, then b&q
oo i got it from ikea tho..ya its heavy!
tanmanknex5 years ago
instead of worrying about precariously soldering a wire to each of the ends, why not put the tilt switch on one of the battery leads? you could just bridge the push button sensor withsolder or something. Just an idea.
Jayefuu (author)  tanmanknex4 years ago
That's a good idea :) In my case, the soldering was pretty easy, with other toys it might not be so your solution would make it a load easier. I'll add it in soon. Thanks!
Glad I could help.
it would also save up on the battery...
godofal4 years ago
yay, tilt switch came in, ive soldered it, and hot glued it to a 7up can :D
its now waiting in the fridge for a helpless victim XD

gotta make a video of it in action soon, free patch for me :D
Jayefuu (author)  godofal4 years ago
Definitely! And will include it in the last step with your permission if you get one :)
godofal Jayefuu4 years ago
sure!
well, maybe not if the victim doesnt want to >.<
and maybe u wont understand a bit of what would be said, since were all dutch...

the can is still in the fridge...
we dont have soda that much, so if we have it we already kinda know its for somebody, so we dont take it :P
maybe i should give it to someone, then il have the chance to video it to :P
Jayefuu (author)  godofal4 years ago
Did you get anyone? :D
godofal Jayefuu4 years ago
kinda, my sister liked it and tried it on her friend, but she was to suspicious, and all they kinda did was gigle (someone shoot them for that)
its mostly becouse its to light, so im gonna add something as a weight, and see if it works then...
Rubber Duck4 years ago
Oh boy, I think our goodwill has a tickle me elmo, but I know it has a chicken dance elmo!!!
pyroal5 years ago
what spicific laughing toy did you use and were did you get it and the tilt switch
THOU AVE NOT TOLD THE NERDS: WHICH TOY DID YE MANGLE FOR USING THE " LAUGHING CIRCUITRY ". NOT EVERY ONE IS CLEVER ENOUGH TO MAKE ONE OR LUCKY TO LAY THEIR HAND ON SUCH A TOY.
alot of fast food stops have them
Jayefuu (author)  confused-confucious5 years ago
CAN HAS MORE CAPS LOCKS PLZZ?? You can get these toys all over. Tickle me elmo is a good one if you can find it cheap, lots of the talking/laughing birthday cards would be good, gadget stores usually have cheap laughing beanbags or other such laughing toys, as do most toy shops.
pyroal Jayefuu5 years ago
thx didn't realize how many things make noise
Jayefuu (author)  pyroal5 years ago
The tilt switch was this one from Maplin. It was £1.89. You could get similar switches from loads of retailers. If you find one you think is suitable but aren't sure, message me with a link and I'll check it before you buy.
this is truly briliant... i know how to record an evil screeching noise and i used that instead of laughing. my brother just about p****ed himself when he tried to take a drink [=
nerd125 years ago
this is an totally awesome prank id like to try it on my parents or sis but they don't drink, buy cans and i can't get all the meterials for this project. thanks though!
Jayefuu (author)  nerd125 years ago
Thank you! Subscribe and vote please, I'll be adding more soon!
frikkie5 years ago
Very nice!keep up the good work
Jayefuu (author)  frikkie5 years ago
Thanks! Please vote if you haven't already!
corksean145 years ago
I got something similar as a christmas present- it was a mug that played a christmas carol when lifted up. Instead of a tilt sensor, it used a light sensor on the bottom , which meant that it didn't always activated when lifted, making it even harder to find the source of the song.
my uncle had one of those, but we threw it away because every time it got washed the washing machine started playing jingle bells lol
Yeah eventually the compartment with the batteries and electronics got water in it and, well.... jingle bells playing constantly at 5x speed was enough to warrant chucking the freaking thing immediately out the window. Pedestrians be damned.
hahaha... merry f***ing christmas to whoever was unlucky enough to be walking under your window that day XD
its the cristmas carrol curse!
XD
Jayefuu (author)  corksean145 years ago
I thought of using a light dependant resistor, but it would have complicated the electronics, and gone off before they got a chance to get it near their mouth.
I want one1 ;0)
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