Anonymous Story Idea involving your mom and daughter OCs (I can't remember their name and your oc page is down):

Daughter brings home cute partner. The fatter, slobbier nerdier mother introduces himself. The cute partner very clearly is into the mom more than the daughter. Daughter catches on, tries to gain weight and get slobbier than mom to get partners attention back. Mom, finding this whole thing funny, continues to be a fat slob, unintentionally continuing to gain. Both get fatter and slobbier.

In the end, Partner sees two fat slobs fighting for their love and says "oh boy, two cakes!" and chooses both of them. Potentially fun mom daughter incest as they share a partner.