"Are you circumcised?"

We have exams next week and for the life of me I just can't kick into study mode. Not that big of a deal, I've kept up and could probably pass both exams at this point. Last night my friends Aza, LaPorta, Rohit and I went out to the local bar for "one beer and then home". I got back at 4 AM. If your cup never actually gets empty, have you technically drunk just one beer?

Conversation from last night:
First Year Girl: Are you fasting on Monday?
Me: No, why?
First Year Girl: It's Yom Kippur.
Me: Oh, I'm not Jewish.
First Year Girl: Yes you are!
Me: Pretty sure I'm not.
First Year Girl: Shut up, I know you're Jewish.
Me: Seriously, I went to 8 years of Catholic school, I was an altar boy. Believe me, I'm not Jewish.
First Year Girl: You're such a liar. Are you circumcised?
Me: Um...Yeah.
First Year Girl: See? (poking me in the chest with her index finger) Told ya.