The USB port for your charger cord.
Yo Mom, you got a back piece I can borrow to charge my phone?”
by ecks113 March 2, 2018
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A big chunk on the back of your head that makes you look weird.
Tom: Yo! wacth your back piece
Trevor:Sorry man
Tom:well be carefull you can really hurt someone with that back piece.
by BSUCLAZZZ June 12, 2008
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