2 definition by theatreslang

Top Definition
When you have memorized all of your lines.
Girl 1: Are you off book yet?
Girl 2: No.
by theatreslang July 16, 2020

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When you have to say a line but the line is not in your brain.
Backstage during a show:
Boy: You were going up back there.
Girl: Yeah, I definitely ruining the show.
by theatreslang July 16, 2020

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