1 definition by andthatshowwedoitgangnamstyle

Coined from the terms imaginary friend and friend with benefits , an imaginary friend with benefits is most commonly found when a person is single, although it is not necessarily restricted to those outwith a relationship . They person will create an imaginary person that they will regularly engage in raunchy sexual activities with during either masturbation sessions or dreams. The qualifying features of a friend with benefits is that said person must be fully fabricated (not a celebrity or someone you know) and that they are a regular part of your self-pleasure routines.
Person 1: Did you hear Glen got a girlfriend?
Person 2: That's not a girlfriend - she's an imaginary friend with benefits. She only exists when he needs a little personal time.
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