of the 'Bros before
A single guy who chooses to go and hang out with female company
or other event attended by women rather
than hang out somewhere with his male only friends.
This is done in the hopes of scoring or to put in the legwork so he may pick up a woman at a later time.
you are out to score some booty
A guy who hangs out with
his established girlfriend/wife over his friends doesn't apply
and is still pussy whipped
John: Hey Nick, you gonna join the boys tonight for some
Nick: Nah man, I'm invoking the Pirate Code.
Nick: Stephanie from work is having her birthday at the pub, I'm gonna drink
bourbon and hit on one of her friends.
John: Good luck man.