People becoming involved with somebody having a ready made family out of a now defunct relationship.
Yo', I gots hooked up with a bangin' bitch and its all good 'cept one of them kids calls me a stepfuck.
by jpg3 August 18, 2011
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A person who is having sex with the same person as you. Similar to metamour but less grounded in romantic love and polyamory and more in consensual non-monogamy
I don’t know her very well but my boyfriend does. She’s my stepfuck.
by 19syllables December 5, 2019
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