Nurse: [concerned] What's the matter, son?
Bart: [clutching his stomach] Sharp, stabbing pains... in my stomach.
Nurse: Oh dear, I've heard of this... [consults a medical reference
book, opens to the page "Amoria Phlebitis"] Do you feel a
shooting pain in your arm?
Bart: [waving his arms] Both of them.
Nurse: Temporary loss of vision?
Bart: [blindly] Huh? Who said that? Come closer...
-- Live from the Improv, "Bart Gets an F"