“How I Got My Mom To Do It”

A sitcom about a young adult teenager and his professional castratrix mom. He yearns to be castrated by his mom and fantasizes and masturbates about it a lot. She finds out about his obsession in the first episode but become strangely evasive. The son is frustrated by her unwillingness to castrate him. The plot of each episode involves a new scheme to induce his mom to castrate him and he comes close each time but then at the last minute something goes wrong and it doesn’t happen.

I did a similar idea in one of my stories about a human pony being pursued by equestrienne dommes that yearn to geld him but he manages to elude them each time until the final episode when his balls come off.