A: How many cups of coffee have you had today?!
B: I don't know, three, maybe?
A: Don't you think that's a little too much?
B: No way! Coffee is good for you.
A: Too much of anything is bad for you!
B: What about water?
A: Sure! People drown all the time.
B: Well, I'd happily drown in coffee.
A: Did you know coffee stains your teeth brown?
B: Does it, really?!
A: Yes. Your teeth will rot out if you drink too much.
B: I'd better stop, then; girls like nice, white smiles!