15 out

1. When you use an alias and don’t show up to an event, such as an interview, intentionally, but you keep texting them “15 out” to piss them off because you’re a shithead and that’s what you do.
What are you doing tonight?” says Shitheads friend.

“Dude it’s Friday night, I’m gonna sit on my couch, smoke some weed, and setup a 15 out on my ex-employer for firing me last week!” says Shithead.
by Falconskove May 07, 2021
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