Top Definition
When someone is on Facebook, via mobile device. This can include but not be limited to: updating Fabo status, Facebook stalking, changing profile pic, etc. Does not include Twitter, Myspace, nor Xanga due to gayness of said sites.
Abbey was mad jackin' all during psych class so now her phone battery is low.
by jakeyjake8872 May 10, 2011

The Urban Dictionary Mug

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

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The Urban Dictionary Mug

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The Urban Dictionary T-Shirt

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