Sir Bedevere: What makes you think she's a witch?
Peasant 3: Well, she turned me into a newt!
Sir Bedevere: A newt?
Peasant 3: [meekly after a long pause] ... I got better.
Crowd: [shouts] Burn her anyway!
This one gets me every time!
and
King Arthur: [after Arthur's cut off both of the Black Knight's arms] Look, you stupid Bastard. You've got no arms left.
Black Knight: Yes I have.
King Arthur: *Look*!
Black Knight: It's just a flesh wound.