To be overly concerned with details that are of little consequence to anything except to the inner workings of the particulous person's own mind.
Bob is very Particulous. Bob is deeply concerned with the fact that one cylinder head on his BMW motorcycle is further forward than the other one. Bob is also deeply concerned by the asymmetric quantity of cooling fins on the left and right cylinders. This worry is exacerbating the idea that one foot might end up warmer than the other from the proximity of the cylinders to his feet, not to mention the differential in heat exchange from the swept area of the heat radiating surfaces.
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.
When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.
I saw Satantango last night, wonderful film but by the 5th hour I had to start doing peecalculus.