it was mom and dads anniversary.... dad was out of town, and i decided to make the day special for mom.... which turned out to be our little date...and my gosh didn't she look hot as hell??? Source: r/family_incst
Your best-friend is fucking your mom and his birthday was coming up.. So you told your mom he has an anal fixation.. Your mom decided to suck it up and do butt stuff with him for his birthday