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One way phone sex consists of a person either calling another person or answering the phone while masturbating. Extra points are awarded if an outgoing call is placed to a friend's significant other.
Carly: I think Tom tried to have one way phone sex with me last night.
Sam: Why do you say that?
Carly: He called and said hello then just started to breath really heavy, but I hung up in time.
by big braddah October 12, 2012