Costello: Who's on first?
Abbott: Yes.
Costello: I mean the fellow's name.
Abbott: Who.
Costello: The guy on first.
Abbott: Who.
Costello: The first baseman.
Abbott: Who.
Costello: The guy playing...
Abbott: Who is on first!
Costello: I'm asking YOU, who's on first?
Abbott: That's the man's name.
Costello: That's who's name?
Abbott: Yes.
Costello: Well go ahead and tell me.