"Keeping Mom Happy" is narrated by Jill Kassidy, who is living with her step-mother Alexis Fawx after her dad's divorce from Fawx, and coping with Alexis's horny boyfriend Derrick Ferrari.
He keeps making moves on Jill until the exasperated teen makes a deal: one act of sex with him and he'll leave her alone henceforth. This is a highly unbelievable plot device from Bree Mills's script but expediency always seems to take precedence over credibility in her porn vignettes.
Fawx arrives home early to catch the duo in the act and blows up, turning on a dime to punish her kid by joining in for a threesome that derives directly from the popular genre of "Mom teaching daughter..." porn.
The sex by the two talented actresses is satisfying, though Derrick is an underwheming performer and untalented actor possessed with mainly a big brown dick as his Industry calling card. Saving grace is a fine twist ending.
Vignette was issued on DVD as supporting B side to the far, far better "A Mother's Choice".