Weaponized Incompetence

When someone does a simple task requested of them badly on purpose so they seem too incompetent to do said task, thus ensuring nothing is ever asked of them again.

Jill: "Will you do *insert simple task here*?"
Jack: "Ugh, I guess." *Does it wrong so she feels that she can't trust him to do it right*
Jill: *Sees the horrible job jack did* "Oh.. I guess I should just do it myself next time.."
Jack: "Great! Weaponized incompetence works!"
Jill: "... What..?"