Probably have this, but... When an actor or actor has to portray someone who, In-Universe, can't act at all. Strangely, it takes real talent to portray bad acting properly, but if done just right it can be funny, amusing, tragic, characterising, or a moment of realisation. Whatever it may end up as, a truly good bad performance can be something to remember, and a real stand-out moment. Done poorly or just not quite right, however, and the audience may well turn on the actor themselves. This makes this trope something of a gambit.
- Ghostbusters one of the running jokes is that they have massively Kitschy Local Commercials with terrible acting.
- Buffy the Vampire Slayer has a really good example right at the end of episode 9 of season 1, Buffy and the gang are forced into preforming a scene from Odepus (a classical Greek tragedy), what results is possibly one of the funniest moments of the series.
- Recess whenever the kids have to act they'll switch to a monotone, like they are reading out memorised lines.
Hello, Unknown Troper. You'll need to get known to lend a hand here.