For me, an expensive seduction of my left hand.
1. Unusual American custom in which otherwise Puritanical just-say-no parents support, tolerate, approve of or feign ignorance and/or disapproval of teenage public drunkedness, destruction of hotel property and lewd behavior.
2. Akin to primitive tribal rituals, where young females are made to look as desirable as possible by hopeful parents, then turned over to spear-equipped young males.
3. The lame, parent-and-teacher-sponsored event preceeding a night of Animal-House-level debauchery at the town's Holiday Inn.
4. Liberally-applicable euphemism for losing one's virginity, out-drinking a sailor on shore leave, participating in one's first gang-bang or date rape, milking the football team's gnads dry, etc.
5. prevarication of ascension to manhood, by one's claiming to do any of the many aforedescribed acts in 4., oft used by the less worthy of the young males who by some force majeure managed to attend or coincidentally be at the same location as the event and/or activity.
2. "Oh my gawd, owr dawter looked so stunning for the prom!"
3. "Dude, after prom, Wendy's playing the woodwind section... know what Im' sayin'?"
4. "So, did you have a good prom?"
5. "Dude, the prom was AWESOME!"