Top definition
When the heat in a room (esp. humidity) is significantly raised due to the presence of so many bros.
"Man, we were watchin' Goodfellas at Caleb's and it got so broasty in there I couldn't stand it."

"Man, it's so broasty up in here... man I could CHOKE on that broastiness"
by mr. soze July 13, 2008
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