Helping a Friend

Morty and Saul, are out one afternoon on a lake when their boat starts sinking. 
Saul, the banker, 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. He begins tugging Saul toward shore. After twenty minutes, he begins to get tired.
Finally about 50 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!”