Bros that have taken their shirt off and are dancing like idiots, completely rolled out on ecstasy. Frequently seen at concerts (especially jam band, techno, and electronica shows) and college parties, SSRB's generally kill the mood for any non-bros in the group.
"I had a great time at the concert, but there were way to many Sweaty Shirtless Rolling Bro's (SSRB's). Kinda lame."
by illegallydead April 18, 2010
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