No pun in ten did!
A-Men.
Nothing, he's been told twice already. (And be cool, if you get the reference keep quiet and let em wonder.)
A running joke.
Like a joke that involves a pun on a word that has different meanings in different languages. Please tell us what languages they are in.
Trying to win a new mattress in a contest and I need a clean mattress joke to win (dumb, I know)
Using saxitoxin.