Top Definition
When two or more men get together to enjoy a cordial time together. Or when a girl that is basically a dude, hangs out with a dude that has no mutual sexual interest.
"Hey man if you wanna come to the bar, craig and i are Boyin' up hard as hell right now."

"Lets boy up on some beers"
by Millytime February 19, 2014
5 Words related to Boyin' up

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