A prison slang term used by older jail inmates or prison convicts for jail or prison "inmate store or commissary" bought items such as: small cakes or pies, candy bars or sweet tooth items purchased by inmates.
zoo zoo's and wham wham's are individually packaged fruit filled pies, twinkies, cup cakes,pound cake, small pecan pies,and all candy bars, hard taffy, licorice and small packages of hard candy, all purchased from inmate store.
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.