ka-bunk-a-bunk
A butt that’s just hanging out, not doing anything, but it’s making you mad because it’s there.
That ka-bunk-a-bunk is just hanging out like it’s got all the time in the world.
My teacher’s ka-bunk-a-bunk is just hanging out and I can’t focus.
I walked into the class and saw this ka-bunk-a-bunk just hanging out and it ruined my day.