This believe it or not actually happened to me once although not with a priest (hey never let the truth get in the way of a good story I say!) but with a Christian friend who was on a perfectly good rant about Jesus, his crucifiction and the harrowing of hell, until he said that Jesus stole the keys to hell. The following slightly embellished story continues here!

Note: I have never actually found any evidence that Jesus actually "stole" the keys to the gates of hell! My mate was most probably talking out his arse...