kaflooey
To completely f*** up something so bad it doesn’t just fail, it throws a tantrum and leaves.
My mom’s cake kaflooeyed into a brown blob that looked like it had been hit by a truck.
My homework kaflooeyed into a 10-page mess of scribbles and crayon.
My phone kaflooeyed during the most important text of my life and sent 'I love you' to my mom’s ex.