Two Jewish guys are walking down the street when they spot a sign outside a
church: “Today Only:
Convert to Christianity and we will give you 100 bucks cash!”
“I’m gonna do it,” one guy tells the other and disappears through the church door.
5 minutes later he’s back. “Well, Did you get the cash?” his buddy asks.
“Jeez Is that all you people think about?” comes the friend’s reply.
edit: cheers for the upvotes.
It was a joke John Cleese told when I saw him and Eric Idle live.
Edited here for clarity.