a cunt's errand - Something you have to do because you're too lazy or too stup

Something you have to do because you're too lazy or too stupid to just let it go.

I had to do my brother's homework for him. That was a cunt's errand.

My dad made me mow the lawn. That was a cunt's errand.

I had to wait in line for the restroom. That was a cunt's errand.