I have some pretty dark fantasies in my mind, so I'm putting a trigger warning.
One is where the bully fucks your mom and fuck up her brain. She turns on you and joins the bully. You get bullied by the bully in school, and your mom at home, and both of them with they get together to fuck. They both make your life hell more and more everyday pushing your limits further. Eventually, you end up killing yourself, then your bully becomes bored and leaves your mom alone with her guilt.
Another is rough anal sex on you and your mom till it's loose. The bully seduces your mom and manages to get to do anal with him. Your bully starts slow then pounds hard gradually, which what your mother likes. He can keep it up for an hour or two until your mother reaches orgasm. The bully then rapes you in the ass so he would cum. This goes on everyday until both your ass and your mom's ass is totally loose and cannot pleasure the bully anymore, who then leaves and go on with his life. However, as both of you have permanently ruined asses, your lives are ruined. You can't get a job or a date without slipping farts and poop all the time