When a young person retires to bed before an age-appropriate time, like an old geezer. Also spelled geezin’ it up. Pronounced with a hard ‘g’ as in ‘gas’.
“Did you make it to midnight on New Years Eve?”
“No, man, my girlfriend and I were geezin it up”.
An expression similar "oh my God" or "Jesus Christ." It is used to convey shock or just inserted into a sentence and hope that peoplecatch your drift or as I like to say get your squanch.