[Pannoniae]

You can either go the custom licence route, but many people do raise (valid) concerns that if you do that, it will be incompatible with others. I do not share that view but I can certainly understand it.

A possible alternative would be using a standard licence like MIT but putting swears/slurs in either the author list or the code itself so using it would be a PR risk, and this could work as a deterrent against commercial usage.