The definitive mom's boyfriend: best & worst tier list - rank, compare, and debate the best and worst mom's boyfriend: best & worst. Place each item from S (GOATed) to D (bottom tier) and share your mom's boyfriend: best & worst rankings. Made for fans who love ranking mom's boyfriend: best & worst, this tier list maker is free, easy to use, and perfect for settling debates on TierBuddy. Popular categories include relationships, dating, family, advice.