Did this one once at a restaurant. All it takes is a drink (with a straw) and a bottle of Tabasco sauce. The ability to keep a straight face is highly recommended. It may take a cohort too, If your unsuspecting person doesn't leave the table.

Step 1:

When your victim, uh I mean unsuspecting target, is away to the restroom put about 4 drops of Tabasco sauce down their straw. This is when a colleague might come in handy. if you can have them distract them long enough.
its even better if their drink isn't very clear - stick the end of their straw into the bottle and put the bottle into their drink...
you should write more : -I
Yeah, I was going to mention using a darker drink. Trying in Sprite or 7UP probably wouldn't work unless your mark is pretty dense. "..stick the end of their straw into the bottle and put the bottle into their drink..." That might be a little too strong, besides the bottle has that little shaker hole at the top, you would have to pry that out.
that is funny i am going to have to try that on my family
thats pretty funny. A bartenders trick for serving a drunk person is to make a soft drink and fill the straw with alcohol, the drunk tastes the alcohol and he thinks hes gotten a strong drink but its just a few drops of alcohol
like :-P<br>
Where did you learn something like that? Did it happen to yoooou?
its part of my vast and infinite collection of useless facts
slap them across the face?
I have a better idea.<br /> Florists use these testtube-like things to keep flowers fresh; they have a rubber cap with a hole in it to poke the stem through. One could be pre-loaded with a substance of choice (with a quickie paper stopper to make it leak-proof) in the convenience of your own home and carried in your pocket.<br /> <br /> I forget what these tubes are called, though, but they are not too expensive.
I do something that I guarantee is better. When they go to the bathroom I wad up a piece of napkin or straw wrapper and put it in the tip of the straw. THEN you flip the straw in backwards so it is in the bottom of the drink. I have done this 5 times, and 4 times they spit up their drink on their lap. The last one thought it was a bug and almost started to cry. P.S.(Girls do not like this prank for some reason, so only do this to another guy, or if you are a girl you can do it to whomever.)
Me and my brother did this put we poured about 5 packs of sugar and about 20 packs of Splenda in a freind's drink. His face was hilarious.

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