Becuz is a combined noun describing a person who is both your "best friend" and "cousin". Sometimes one acknowledges their friend as their cousin but leaves out best friend or acknowledges them only as their best friend leaving out the family portion. This solves the complicated introduction.
Jake: "Shayna who's that?"
Shayna: "That's my becuz, Amy."
Jake: "Huh?"
Shayna: "Becuz, she's my best friend and cousin. Nuf said."
BIGH: I had this guy friend years ago who never bought his own weed. Yet, he was always there and ready to smoke mine. That got old -quick. So I bought a bong shaped like a big erect penis and I started saving money because he refused to hit it! I've still got that Bong, hits nice...becuz i got high
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.