Red: You've got strange thoughts in your little head, mister, and that Donna's a nice girl.
Kitty: Red, you are giving him the wrong idea about sex. It's not dirty.
Red: But it's not clean, either.
Kitty: Okay, cleanliness. Now, that reminds me, always make sure your nails are trimmed and clean. Oh, foreplay is very important.
Red: No, it's not.
Kitty: Yes. It is.