BSOMBS is short for the term, "ball sack on my ball sack." This is not inherently a homosexual term, though it can be misconstrued that way. It is generally used as a term of frustration, although it can also be used jubilantly.
Adam: "Dude, I just got a C on that test!"
Kathryn: "BSOMBS!"
Danny: "I just pwned some zombs. BSOMBS!"
Kathryn: "BSOMBS!"
Danny: "I just pwned some zombs. BSOMBS!"
by thebigtoro January 20, 2012