The other half!
Santa got a job in a supermarket, and one day a man came in and wanted to buy half a grapefruit.
I don`t think we can sell half a grapefruit, said Santa, but I`ll ask my boss.
He walked over to the boss and said, Some idiot wants to buy half a grapefruit, then noticed that the man had followed him over and heard the comment.
And this fine gentleman, Santa added, “would like to buy the other half.