OK, i wish this was my story, but I'll be honest. can't remember where i hear it, maybe i was there, can't remember.
the scene - finishing off a 8-ball of fet between friends, it occured to these ppl that the police or fbi where recording thier converstaions, and staking out thier place, ready to pounce and hiding in the bushes just outside (as you do), to prove or dis-prove this idea, an old scanner was brought into the room, and the entire night was eventually spent, scanning every frequency to see if they could hear thier own voices or the background music in the room, thereby learning that they where indeed, being watched, needless to say, they drew a blank, classic