Justin Bieber and TOm Cruise meet in an elevator. "Where are you heading today?" the Cruise asks.
"I'm going down to give blood."
"How much do you get paid for giving blood?"
"Wow," says the Cruise, "I'm going up to donate sperm, and the sperm bank pays $100." Bieber angrily gets off the elevator.
The next day, the Bieber and Cruise meet in the elevator again.
"Fancy meeting you again. Where you off to today?"
"Sperm bank," said Bieber, with his mouth full.