big O n.
1. (drugs) opium.
|Grand Dictionnaire d’Americanismes.|
|ONDCP Street Terms 3: Big O — Opium.|
2. an orgasm.
|Oz 7 23/3: The Big ‘O’ – the only measure of sexual success American men (and women) will accept.|
|Myra Breckinridge 200: I was about to reach the big O, shrieking with pleasure.|
|Playboy’s Book of Forbidden Words.|
|Stingray Shuffle 293: Either of those two things, and it’s no Big O for Maria.|
3. (US campus) a person with no personality.
|Campus Sl. Nov.|