9 (voted best new Passover knock-knock joke)

"Knock, knock."
"Who's there?"
"The Angel of Death."

6

The poor blind man
begs again at the escalator.
"I haven't seen you in a while!" someone cries.
"I haven't seen you ever," he replies.

1

LIVE, EARN, PLAY, LEARN
Fire burn, butter churn.
Bow or stern? Can't discern.
Your turn, Boston fern.