Two lawyers are in a bank when armed 
robbers burst in. The customers, including 
the lawyers, are thrown up against a wall, 
and the robbers proceed to grab their 
wallets, watches, etc. While this is going 
on, Lawyer #1 jams something into Lawyer 
#2's hand. Without looking down, Lawyer 
#2 whispers, "What's this?"

Lawyer #1 replies, "It's that $50 I owe you."