Putting a bumper sticker on someone else's car that says something stupid is an OK prank. But to stick one on that they might not even notice and shows up when lit with headlights from another car, that's waaaayyyy better.
Note: your target needs to have a black or very dark vehicle for this to work.
Step 1The secret sauce
The main ingredient here is retroreflective black 3M adhesive vinyl. In other words, a big black sticker that shines back at you when you shine a light at it. It's awesome stuff, great for putting on your bike when you want to be a safer rider at night without looking like Safety Boy during the day.
Small pieces can be easily found on eBay. I got a 6" x 18" piece for about $10, including shipping. That's enough for 4-6 bumper stickers depending on how tall you want them.
eBay search for reflective tape
In most city's and some States they have anti-tagging laws.
Make sure the "victim" is someone you know that wont have you arrested for vandalism if you get caught! LOL
:0)
The point is to not get caught, what would be the point of putting something on someone's car while they watched you?
Besides, nothing is illegal if you don't get caught.
However, check out this awesome Team Edward t-shirt.
might have more impact LOL
LOL
Those magnetic business cards work best...no need to purchase special magnets. Just adhere the enitre magnet to the back of the sticker.
No worries about permanent damage to anybody's property. However, public humiliation may still be an issue. :P
Nice cop: "I Brake For Donuts"
Fat nasty cop: "OINK OINK"
Cute female cop: "Miss Aprehension"
What ever you do DO NOT GET CAUGHT!!!
Say, your friend has a red car, then you buy a piece of red reflective tape/sticker, a can of red paint and some sticky letters.
Spell your message using the letters on the big sticker/foil. Spray paint on the whole thing, wait for the paint to harden, then remove the sticky letters.
Voila -stealth bumper sticker!
Good point about getting adhesive letters, though. That's a good way to do it. I'm just a sucker for control over fonts.
1. Cut a bumper sticker shaped rectangle from the 3M vinyl.
2. Trace your 'art' onto it and cut it out with an X-acto knife. Pull the graphics out and discard or reuse. Try not to cut through the adhesive backing paper.
3. Backing paper. Spray a sheet of freezer paper or vellum with spray glue. Let it sit until it is not wet, but tacky. Attach it to the face of your bumper sticker. Now, you have the adhesive backing on one side and the DIY backing paper on the other.
4. Pull of the adhesive backing paper and stick the whole assembly onto the targeted car bumper.
5. The vinyl adhesive is much stronger than your spray mount freezer paper, so now you can peel the freezer paper right off.
When the light reflects off it, the sticker will be a bright white rectangle and the letters will be black, because the cars paint is showing through.