Abbott: I've made a great discovery!
Costello: What did you discover?
A.: Nothing!
C.: What? You’ve invented nothing?
A.: Yep, that’s what I did.
C.: They can you be a great inventor?
A: Because I came up with Nothing!
C.: Wait a minute. You’re telling me you’ve found zero, zilch, zippo, absolutely jack-shit nothing!
A.: Yes, and not to brag, but I’m very proud of that.
Etc.