kachunkerchunker
A human who makes mistakes so bad they should be banned from life. Basically a disaster in human form.
He tried to cook and set the house on fire. Kachunkerchunker for life.
She tried to build a fort and it fell apart. Total kachunkerchunker.
He tried to play the guitar and it sounded like a cat was screaming. Pure kachunkerchunker.