He heard he might be playing a big roll
Because every time he puts up a prayer it gets answered. (I thought of this myself, but it is so corny, it could easily be in every damn joke book.)
Battleshvitz
Because they have a hard time puckering their lips the right way.
Because dogs can't whistle. (X-post from r/dadjokes)
They baguette.
Shirley you can't be Sirius.