E' Ya Fanny
A Scottish insult that means you're an idiot or you did something so dumb it made the clouds fall over. It's also used when someone's accent is so bad it sounds like a goat with a lisp.
'E' ya fanny!' my friend shouted when I tried to explain how to tie my shoes and failed.
'E' ya fanny!' my teacher said when I wrote 'math' as 'maths' on the board.
'E' ya fanny!' my brother yelled when I tried to cook and just burnt the toast.