dackaa
A dackaa is a person who is so annoying they could make a clock quit working. They do stupid stuff just to get under your skin.
My little sister is a dackaa. She sings in the shower and then yells at me for not listening.
My neighbor is a dackaa. He painted his house purple and then said it was a fashion statement.
My friend is a dackaa. He ate my sandwich and then made me eat his pizza.