a plumbing focus
This is someone who thinks about butt stuff more than they think about anything else, even food.
I ate my entire sandwich while thinking about how my toilet works.
I told my crush I wanted to be a plumbing focus and he asked if that means I'm into butt stuff. I said yes. He ran away.
I got a 100% on my math test because I was too busy thinking about how my butt feels when I sit down.
xs