When you penetrate a member of your family IE a brother. Brotherly love
I bent darren over the sofa last night for a fam slam.
by Reevesii September 25, 2017
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The word is generated from the south. When a child is sexually traumatized into doing sexual favors for their family members
Johnny was forced into a slam fam by his mother to create a uncson.
by Thatregionboy219 October 3, 2017
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