A SHADDAP
A shaddap is a dirty, smelly turnip that shows up in the middle of nowhere to make people shut up.
Shaddap! That turnip is so moldy, it smells like my cousin’s gym sock!
Shaddap! You’re talking so much, I think the turnip is about to explode!
Shaddap! If you don’t shut up, I’ll throw this turnip at you!