A cellular telephone obtained with the specific intent of calling or texting a love interest. The need for a Booty Phone occurs when two people hook up and find they have different cellular providers. Rather than pay overage charges, it is less expensive to add a Booty Line to one's cell phone plan.
Dylan: "Allison and I decided to get a Booty Phone."

Oscar: "Whose network did you choose?"

Dylan: "Hers...ten bucks a month with unlimited network calls...although textual relations still cost extra. The phone was only 20 bucks plus tax."
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A phone purchased in secrecy from a carrier other than the one your gf or wife knows about. Used specifically for booty calls. A number you can give out freely without fear of getting caught.
Last night I took a shower and my gf read my text. I gotta get a booty phone!

I got to work Monday and had four voicemails on the booty phone.
by 33000 October 11, 2011
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A phone booty call is when someone calls you very late at night typically after midnight just to talk to you and have a conversation. However, They'll only talk to you after midnight. Most people would call someone after midnight for a booty call but phone booty callers call after midnight just to talk on the phone. They won't speak to you the entire day unless it's midnight.
Girl: Hey !
Guy: *8 hours later when it's finally midnight* hey whats up ? i'm gonna call you
Girl: ok

The next day
Girl: *sends message at 2pm* Hey whats up?
Guy: *waits until midnight to answer back* Hey whats up ! let's talk on the phone
Girl: You only talk to me at midnight and you specifically wanna talk on the phone at that time and then ignore me the next day until midnight. You're using me as a phone booty call !
by Wassup456 May 29, 2017
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