1. A person, namely a male, who talks a big game but has none whatsoever. This individual goes to the gym but only to leer at others working out.
2. The biggest of all the chumps.
Two of Mike's friends get into a fight. Mike hides under the table in the fetal position...The next day at the gym Mike has the audacity to say he didn't want to jump in because he is too big. Everyone agrees that Mike is a true Chumpzilla.
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.