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When people BBM (blackberry messanger) somone and three lines show up beside their lil face guy.

This could be because a)they are on the phone b) their phone is dead c) they are out of service area d) their data is down

However,there have been a few instances in where three linin has occurred and the cause is unknown ...
Fuck! amy's three linin must be talkin to that douche again ...

Have you talked to Kait today? shes been three linin for hours ...

OoooOOooo you were talkin to Myra ... saw you three linin buddy
by Kaitamylin February 26, 2009
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