Late one winter night, back in college, I came across a discarded but still healthy Christmas tree on the side of the road while walking back from a convenience store.
"Why look, someone's abandoned a perfectly good tree," I remarked.
My roommate and I carried it into the parking lot, with the intent of causing some sort of mischief with it.
We found our friend's often-mocked station wagon (a massive, semi-crapped-out Caprice Classic) and I correctly guessed that its back gate had been left unlocked.
So we opened up the back of his car and shoved the tree into it, stump first. Mostly I intended the prank as an impossible-to-ignore indicator of his car's unnecessary size.
We told no one of this, and the next day he's going around saying, "Somebody put a tree in my car!!" and everyone (including us) is laughing hysterically. Our friend kinda got pissed off when he tried to remove it, though, because the branches caught on the upholstery and the ceiling lining, ripping huge gashes on its way out (and, needless to say, leaving a king's ransom in pine needles and oozed sap behind). I did finally tell him it was me, but being the non-violent type, he suppressed any rage he felt towards me.
The only other prank I've pulled that comes close to being as evil as that one was when I fooled a Muslim friend of mine into eating an obscure type of sausage at an international food festival. "Of course there's no pork in it," I told him falsely.
Only after he had eaten it did I reveal the truth, but he didn't care because apparently Allah wouldn't punish him if he ate it unknowingly. As far as I can tell, Allah didn't punish ME either, though I do kinda feel bad 'cause this was the guy that introduced me to Civ.
)
When they realised what I did they beat the living daylights out of me
