longbough

*sigh* this reminds me of those discussions where heterosexuals explain how homosexuality is a pure choice.
The vagina is a muscular organ - Ask your med student friend for a copy of Netter's Human Anatomy if you want to understand this concept.

Next time you are intimate with your girlfriend - pause for a second and ask her to give you a couple of good kegel squeezes so you can see for yourself. My gf's vaginal muscles are well developed (no, she doesn't have a big, muscular crotch) which was a delight to discover and made sex that much more fun.

I hope your "first year med student" friend didn't leave you with that rationale. Haven't you ever heard of a hymen?
Do you know what Google is?

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"I do believe that, where there is only a choice between cowardice and violence, I would advise violence. Thus when my eldest son asked me what he should have done, had he been present when I was almost fatally assaulted in 1908, whether he should have run away and seen me killed or whether he should have used his physical force which he could and wanted to use, and defended me, I told him that it was his duty to defend me even by using violence." - Mahatma Ghandi