B.O.S.

Blast On Site- used in gang grafitti to threaten rival gangs.

Brothers Of the Struggle - meaning any gang member involved in the gang struggle

B.O.S. Lil' Mac, Blast him On Site

by Oscar III March 6, 2008

B.O.S.

stands for Beating on sighting

timmy been slipping up give him a B.O.S.

by kingkong420 January 7, 2008

B.O.S.N.I.A.

big ol' standard Navy issue ass

occurs after a female in the navy sits and shines her belt and/or shoes too much, or just after putting on her navy issue working blues.

This place (command) is B.O.S.N.I.A. ridden.

by NAPS December 10, 2003

B.O.S.

stands for Balls of steel , is used when someone does something that takes a lot of balls. so you you give them their props. is a compliment given to a true badass

dude 1-- " oh man i cant belive she just did that shes crazy!"

dude 2-- "i know man shes got some B.O.S.!"

by yellowseven365dude September 14, 2012

B.O.S.S.

Bears, On, Something, Sexual

he plays xbox like a B.O.S.S.

by The German6 November 5, 2011

b.o.s.

brushes off shoulder or brushing off my shoulder; used when you want a cocky way of saying thank you

jordan: dawg, you are so good at being cool
kim: b.o.s.

by Kimburrlee May 11, 2008

B.O.S

It means when you're going for a ( Wank, Masurbate, etc )
B. = Burst
O. = Of
S. = Speed

Me> Hey fred, I'll brb.
Fred> kk, why?
Me> Going for a B.O.S.
Fred> Kk, safe!

B O S B.O.S BOS Wank Masturbate

by Definion Of The Day !! Hey Hey ! March 17, 2007