Philosophy Major: You have no reason to believe that.
Peer: I don't have to believe it. I know it.
Philosophy Major: Knowledge consists in part of beliefs. What evidence do you have to believe that?
Peer: She confessed to me about it this morning. Dude, I can't believe she even did it with you!
Philosophy Major: So you don't believe her? Then you don't know.
Peer: I believe her. She said it.
Philosophy Major: And you're believing her account over mine? Which is more miraculous to you: the concept that she would sleep with me or the concept that she wouldn't?
Peer: That she would sleep with such a pretentious asshole.
Philosophy Major: Well isn't the most miraculous the most unlikely?
Peer: All I know is that you'd better watch your back tonight.
Philosophy Major: You should be most likely to believe the least miraculous.
Peer: Dude, you're right. You are too much of a dick for her to sleep with.
Philosophy Major: I think that's the reason she liked it so much.