dogging out the boys

ditching your friends (who are boys) to do something else with another person, usually a girl

Jason: are you coming to Ethan's house tomorrow?
Andrew: Nah sorry I'm hanging out Lucinda
Jason: come on man, you're dogging out the boys

Let the dog out

To burn one on your lunch break, getting high

Stephanie always says she is going to “let the dog out” when leaving for her lunch break.

Dog out

To cancel plans with little or no notice ahead of time.

See also: bail on, ghosted

q: "Did you have fun at your concert this weekend with Stressica?"
a: "Nah, she decided to dog out on me again."