Gun-fundled

Originating from an olde English phrase meaning to stumble and fall while in possession of a firearm, this modernised word now more commonly means to "fatally" mess up a situation - actions that create a problem which is not easily remedied.

"I done gun-fundled that dinner party!"

"Asking if that woman was pregnant was a massive gun-fundle."

"I done gun-fundled when I forgot to study for that test."