Meaning someone who is both a twat and a wanker.

Got the covid-19 vaccine

A fusion of the already very expressive words twat and wanker to describe a peculiar, even unique, kind of contemptibleness found in those who are both stubborn and awkward, awkward and stubborn.

A wanker that uses Twitter.

Abstracted from other words prepended with 'tw' such as tweople, tweetup, twestival etc...

Noun: Someone thought by another to be a fool, an idiot, or someone whose behaviour is in some way unacceptable (but not illegal or overly troublesome) to the norms of the majority in the vicinity.
Etymology: derived from 'wanker' but thought to be less offensive.

(noun) A person, organization, or company who uses bad form or exhibits bad behavior on Twitter.

it is a shortened word for"toms a wanker"