male equivalent of PMS. stands for blue ball syndrome. when a guy is very horny and he has "blue balls" and gets very annoying because of the hormones.
Matt: hahahahaha im so annoying!
Me:dude you need to go shoot one off because you are totally bbs-ing
by sillyindian October 20, 2008
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Short for Bush Banger. someone who engages in sexual activities with an extremely hairy partner.
omg Brandon is such a BB! She had more hair that sasquach!!!
by editor in urban May 17, 2011
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Big Butt Syndrome.

Doesn't always mean the girl has a big butt currently, but after you check out her mom, you know you're in trouble.
That girl is hot.....except for that bbs.
by Argo February 6, 2004
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Acronym for 'Birthday Bum Sex'
Girl: Hey babe, it's your birthday next week, what can I buy you?

Guy: Don't worry you don't have to spend anything, just a bit of BBS will do for me thanks!
by Smaler February 18, 2015
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BB = Bare Back. Gay defenition for having Sex without condom.
BB encounters are risky.
by accessdenied January 1, 2009
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