Haha, I was expecting the "over 9000!!!!" replies the minute I read the thread title. Yeah, I'll agree with some people that "between 15-20" is kinda shady, for an 18 y.o. not to know exactly, you must be having one *hell* of a time in college to not even be able to recall ;-) To be honest, there's nothing to be proud of if you're over 20, and there's nothing to be ashamed of if you're at zero, a lot of people need to get over it. In fact, I know about an equal number of people who are virgins, and who are my age but have at *least* 30.
OT: I'm 28...have had encounters with 8 different individuals, 2 of them 1-night stands, so I've been around long enough to justify that number I think. Granted, I started at 13, but damn do I regret it...so much in fact, I went through a 6 year hiatus, that's right, no more sex after that till university.