[She pauses for a moment, trying to think of a story that'll both satisfy his curiosity and allow her to keep her dignity.]

Well. Beyond dragging me along to any number of parties, she and one other friend were responsible for my getting so drunk I blacked out.

[She doesn't look all that sorry about it, to be honest.]

He was tall, and, looking back, I think trying to impress me by telling me how much he could drink. I, ah, took it as a challenge. She encouraged me.