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1 definition by John Jones III (AKA Lucky Turner)

 
1.
The categorization of individuals who pull out their cellphones at inappropriate periods of time, regardless of surrounding social activity and social propriety.(i.e. pulling out a cell phone while on a date, pulling out a cell phone mid sentence without warning.)

Cellots also have a series of telling behaviors, such as hurridly reaching for their phones on whenever the generic nokia ringer is within earshot. They also feel the need to convert all non-cellots to cell phone owners.
1.)"Man, that chick Dana whipped out her phone to talk to her ex while we were out on a dinner date"

"What a Cellot!"