10 Times Actors Broke Character In Movies
4. Mike Starr & Jeff Daniels - Dumb & Dumber
Perhaps the single most unforgettable moment in Dumb and Dumber occurs when Lloyd (Jim Carrey) subjects hitman Mental (Mike Starr) and best pal Harry (Jeff Daniels) to "the most annoying sound in the world." And boy, the resulting screeching sound sure is.
As it turns out, the gag was improvised by Jim Carrey during shooting, and if you look closely at both Mike Starr and Jeff Daniels, they're struggling not to laugh their asses off.
Starr screws his face up in a way which can at least be interpreted as frustration, but Daniels is very clearly corpsing as Carrey lets out his insanely grating racket. A moment later the shot cuts to Mental looking decidedly more upset about the situation, and that's that.
While it wouldn't have been remotely out of character for Daniels' Harry to start laughing at his pal's grating outburst, it's clear that he wasn't supposed to start cackling in that moment, but just couldn't resist.