Will Forte was left red-faced while filming an awkward nude scene in new comedy MACGRUBER - his mother made an unexpected visit to the set.
The funnyman had invited his mum Patricia to drop by during a shoot, but forgot he had agreed to strip off on the same day.
He says, "There is one scene in which I have to be completely naked and a piece of celery figures into it in a very unseemly way.
"I'm on this set, I'm completely naked cupping my genitalia about to put a piece of celery in a place where God did not intend celery to go, and I looked up and my mom had come to the set and she was there with her two friends. Just the look on her face (was shock)."