Ever gone to a bar where they ticked you off? Is the place too cheap that they water down your drink? Want to get back at them with very little effort of your own? Then I have the solution for you!
The tools of the trade ...
Grab a few cardboard coasters (make sure they are all the same) and take them home. Make sure that these coasters are 'new' and unused.
At home, take a sharp exacto knife and carefully split the coaster in half like two slices of bread. The additional coasters are for re-dos in case of errors splitting the coaster.
Take a newly minted $20 bill, folded so that it will easily fit in the middle of the split pieces of coaster.
Carefully glue the two pieces back together and let dry.
Here is where the fun begins!
Take your "special" coaster in the bar with you and while chatting with a fellow bar-fly mention that the coaster advertiser (Coors, Bud, etc.) is having a special promotion on their product and has hidden money in the coasters. Grab a few coasters and rip a few apart. (You had already slipped YOUR coaster in the stack) You get to YOUR coaster and rip it in half ... "HEY everyone!!! I won $20!!!"
Now sit back and watch the crowd go though the coasters like a chainsaw going though melted butter! By the time the night is though there won't be one whole coaster left in the place!