He didn't jump high enough.
A Zebra.
Hay bail.
Inherited obesity
And what is he running for
Sam-BOO!-ca
He said "Sure! I could loan some Dove".
Because everyone that can run, jump or swim is already here in the US.
Because he higher and higher. (I translated the joke from Dutch, and yeah it's supposed to not make any sense, it just sounds funny, in Dutch at least. :-$)