Pimp
A pimp is a offer or other action that forces another actor to quickly think of what to do next. It is called so because pimps make others do their work for them.
Examples of pimps include questions like "What are you doing?" and commands like "Read this." Actors often respond to pimps by throwing them back at the pimper (e.g. "Um, what does it look like I'm doing?," "It's dark; could you read it for me?") slowing the scene and confusing everyone.