Pillock

[Tina]

A man who has dropped a major bollock. Not nescessarily a stupid bloke, rather, one who has done a stupid act.

[Britney]

A person who commits a stupid act or one whos stupidity backfires.

[Little_Girl]

A stupid [pratt]; a [wazzock]

[Rihanna]

A British word for an Idiot or a real jerk!

[Donald Trump]

Person with one [bollock] ,now a derogatory term used to describe a generalised [twat]

[Justin Bieber]

Noun for Idiot, fool. Originally a slang term for the penis but fairly inoffensive now its this meaning has been forgotten. Derog. ref British Slang Dictionary

[Jessica]

Someone who is stupid and has made a mistake!!

[PussyCat]

Term of endearment; heartening