Note: can also apply to such things as dogs, children, video game characters, and rocks.
"Dude, you're not British."
"Mom, look at this chavvabe. What a douchebag!"
"I saw your sis snogging that chav Brett."
"Yeah, she's such a chavvabe."
"Why would you dress your dog in Burberry?"
"Oh, it's to keep him warm. It's just so chilly-willy!"
"You know your dog's a chavvabe..."