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Noun. Similar to Hard-on
When your cell phone or ipod gets stuck horizontally in your pants, making you look ridiculous. Hilarious to everyone in room if whoever has a Cell-on is completely oblivious to it.
Joe walked into 7th period today with a cell-on. That or he has a dick shaped like a LG voyager
by manamanamanamanabing March 05, 2009
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