Two Jews, Morty and Saul, are out one afternoon on a lake
when their boat starts sinking.

Saul says to Morty, "So listen, Morty, you know I don't
swim so well."
 
Morty remembered how to carry another swimmer from his
lifeguard class when he was just a kid.  So Morty begins
tugging Saul toward shore.  After ten minutes, he begins to
tire. Finally about 100 feet from shore, Morty asks Saul,
"So Saul, do you suppose you could float alone?"

Saul replies, "Morty, this is a hell of a time to be asking
for money!"