Slang: An (Re)Ev(De)volution in Language???

Setting: Lunch time, three guys at a table and then one comes and sits down.

“How’s it going mates?” says Jacob.
“Jacob. You went to Australia for two weeks. There’s no way you picked up an accent. Let’s get serious here. You’re not an Aussie!” said Josh angrily.
“You’re a twazzock!”
“Forget you!”
“Hey! Now we all know you’re not an Aussie, so just shut up and look at the new girls will ya.” Hans said.
“Oh shweet, oh did anyone see Ms. Finch? Jacob asked.
“No why?” replied Jim.
“She just got the dirtiest chicken cutlets I’ve ever seen. They look amazing now.” Jacob replied.
“I guess on a teacher’s salary you can get them… endless she did something else for them. Ha ha ha. Jim pointed out.
(They all laugh)
“Yo dude check out that girl!” Jacob said.
“Where? Where?”Jim replied.
“Right there.” (He points)
“Ballin,’ look at that ass!” Hans exclaimed.
“Yeah. Let’s just see if she’s got the face.” Jacob wondered.
“Turn around honey. Turn ar – OHHH” Jim said.
“Haha damn that girl is ugly as sin. She’s a damn 1661, who would have thought that.” Hans exclaimed.