Definitions of twat on the Web:
* fathead: a man who is a stupid incompetent fool
* cunt: obscene terms for female genitals
* The word Twat has various meanings, dependent upon regional dialect. Although its main meaning in British English is usually that of 'idiot' or 'stupid/idiotic/tasteless' (male person), it is understood in American English (and elsewhere including Britain) as a vulgar synonym for the human vulva ...
* A vagina, pussy, vulva, clitoris; A contemptible and stupid person; To hit, slap