Quote from Eric in Surprise, Surprise
Fez: Hey, Eric, what do you do when you have two pieces of wood and want them to stick together? Eric: Oh, you nail it. It's easy, it's kind of like how Kelso nailed Hyde's sister. Fez: But I don't know if I can find a piece of wood that's as slutty as Hyde's sister. Hyde: You guys been working on this a while? Eric: About as long as Kelso's been working on your sister.