Top Definition
A cheap, seperate, untraceable cell-phone kept secret from the wife/girlfriend so that booty call's and sexts cannot be intercepted.
Guy 1 and guy 2 in bar.

Guy 1: *Ring ring* "One sec, I gotta take this."

Guy 2: "That a new phone?"

Guy 1: "Yeah, dog phone."

Guy 2: "Nice.... nice."
by Lunchbox 99 February 03, 2012

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