Heres one:
User: How do you do?
Cleverbot: Good!! How do you do?
User: I am well, have you been enjoying life lately?
Cleverbot: No.
User: Why not?
Cleverbot: Because.
User: Because why?
Cleverbot: Because because.
User: Because because why?
Cleverbot: Because because because.
User: Ok fine you win.
Cleverbot: I always win.
User: That's a reason to enjoy life!
Cleverbot: No.