MR. Z (reading a magazine): What's vee-aggra?
ME: It's "viagra." And what are you reading?!
OLD LADY: It's a pill for men who can't get an erection.
MISS O: What's an erection?
MR. Z: It's so weird! It's when your thing gets hard and sticks out. I get one when I have to pee or when I see a cute girl.
MISS O: Hm.
ME: Hey, who needs more milk?!