From the
Wikipedia article for Pwn:
During the telecast of the 2006 World Series of Poker Tournament of Champions, Daniel Negreanu tells Mike Matusow that Mike Sexton "pwned" (pronounced [poʊn]) Matusow with an especially good play. The closed-captioning, however, misinterpreted Negreanu's remark as "boned."
Well, either is funny, really.