When we were filming Bo Diddley and Bo Jackson onstage for the BO KNOWS commercial, a musician showed Bo Jackson how to hold the guitar properly so that it looked like he was really playing. During the shoot, the musician was off stage watching Bo (Jackson) and mimicking his movement. We were doing a live recording. After the whole thing was over and Bo (Jackson) saw the video playback, he thought he actually did the playing, not knowing that he was shadowed offstage. I shushed the real musician.
I never mentioned it to Bo. He may still think he can play.