Ellen DeGeneres asked Debra Messing to play a game of Speak Out on her show today, but the host had an ulterior motive. As the red head had that plastic thingy in her mouth that gave her that shocked look, Ellen had someone scare her. Which made it harder for the actress to react to anything other than, well, shock. Which was intensified because she was so focused on the game, so she fell out of her chair and found herself on the floor with the plastic thing still her mouth.
Thankfully for the Will & Grace star, she was not left with the Scream face permanently.