Daft (to describe an act of foolishness or the person committing it, although may also be used for stupid or mad / insane).
you can say " twit" or "blockhead'
A slang word for somebody foolish
ello
A berk is a pejorative or slang term for a foolish person.
"Cheesy bellend" is a derogatory slang term that can refer to someone who is viewed as gross, irritating, or foolish. It combines the British slang term "bellend" (slang for the head of the penis) with "cheesy" to emphasize the negative characteristics of the individual being described.
A bampot is a Scots slang for an idiot, or an objectionable and foolish person.
A "blooming idiot, is referred to as a foolish person who consistently makes mistakes or idiotic choices. The word blooming is a British slang expression meaning to a great degree.
In British slang, barmy means crazy or someone has gone mad/loopy-loo. For example: 'I say Jenny you have been acting rather barmy lately!'
That is the correct spelling of slang word "cockamamie" (ridiculous, foolish).
In British Slang, a "woof" is a male homosexual.
not feeling well chap I'm British. We usually just say: Holy f**k, got hangover. -_-...
A banyak is another term for a baniak - a pejorative slang term for a foolish person.