Knock Knock.
jabberwacky: Justin.
user: Justin who?
jabberwacky: In time for dinner.
user: *laughs* OK, that is a good one. Tell me another.
jabberwacky: Oh.
...
user: Tell me another joke.
jabberwacky: I don't know any.
user: I know one.
jabberwacky: What is his name?
user: I don't know, I just met him.
.......................................