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1.
SBN
Text talk for Lesbian.
"I asked Sharise out, but, she turned me down. God, I'm such a loser."

"No, it's cool, she's N SBN."
by Sex ED July 28, 2006
 
2.
Acronym - Stuck Behind Niggers

When black people walk really slowly and you get stuck behind them in the hallways on your way to class.
I'm so sorry I'm late, professor. I got S.B.N.'d in the hallway three times on my way to class.
by J Springs November 29, 2005