With thanks to Blackadder...
Leila: "Say Spock, have you ever felt the exhilaration, the thrill of the wind blowing through your hair?"
Spock: "No, I can't say that I have."
Leila
breaks wind long, loud and hard: "There you go."
Amanda: "What do you mean 'There's something wrong with my hair'?"
Spock: "Father gave you a couple of 'Something About Mary' moments again, didn't he?"
Kirk: "Ok, I beam over undercover to the Romulan ship, I have to spend a couple of hours under the surgeon's knife. You wind up in 20th Century Earth, you get away with wearing a hat. How does that work?"
Spock: "Vulcan's have better unions."
McCoy
os: "Yeah, but only once every seven years! Hah!"