Action or behaviour that advertises that someone is a twat. Good examples are: posh white people that have dreadlocks, being vegan, going to any left wing demonstration, or getting offended on someone else's behalf.
Did you see the spoiler on that car? What a twatvert.
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.