1 definition by annonymouslife

commonly used on facebook and stands for "Side-Bar"

used when adding a thought that doesn't have to relate to what was written before it..

If you still don't understand it, think of when you're writing a letter.. SB is the same as when you say 'PS.' at the end, because you forgot an important point.
Happy New Years Ev everyone!!! sb, birthday in 7months!
by annonymouslife December 31, 2009

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