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
A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
British slang for a scientist or technical expert, esp . when the speaker is not certain of the expert’s specific field of study. Not necessarily derogatory, but typically used by persons without a technical background. In the US, the equivalent would be “egghead”, “squint”, or “geek.”
Origin of the word is unknown. Started sometime in World War 2. Given the typical evolution of British slang, could easily have started because what these experts did was confusing or “baffling” to the common person.