A Comedy Open Mic is an event where both amateur comedians and sometimes even professional ones get the opportunity to perform in front of an audience. "Open Mic" essentially means "open microphone," indicating that the stage is open to anyone who wants to perform, usually on a first-come, first-served basis or via a sign-up system.

1. "Raw talent. Real laughs. Join us for an evening of unscripted comedy at our Open Mic night!"

2. "Where new jokes meet a live audience. Dive into pure comedy fun at our Open Mic event."

3. "Fresh faces, funnier jokes. Experience live comedy in its rawest form at our Open Mic."

4. "Laughter unplugged! Join us for a spontaneous night of comedy at our Open Mic event."

5. "Comedy, straight from the heart. Experience raw talent at our Open Mic night."