1. Point at which alcohol intoxication adds and not hinders one's ability to chat, pull, and perform sexually.

2. Intoxication from alcohol leading to greater confidence in approaching the opposite sex, but not causing the other sex to think you are a complete drunk.
Guy 1: "Man, you were on fire last night with the ladies. They loved everything you said. Did you take those twins home?"

Guy 2: "Yeah, I was optimum drunk."
by Joe Gat March 31, 2010
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