dahkles - A word that means nothing, but you use it every time someone

A word that means nothing, but you use it every time someone says 'What?' like you’re trying to make them feel stupid

'What?' 'Dahkles!' You’re like a teacher who doesn’t know how to teach.

'What?' 'Dahkles!' I’m not even listening anymore, you’re just annoying.

'What?' 'Dahkles!' You’re the reason I’m late for school.