You know that awful moment when your Dad gets up to sing at a function?

Paul McCartney's stepson Arlen Shevell graduated from Rollins College in Winter Park, Florida, last Saturday,and while Macca was proudly watching Shevell accept his diploma from afar, he just couldn't resist when he saw a microphone.

Just about beats your Da drunkenly burping out the fields of Athenry....only just though!