is someone who is most likely an expert in the specific field which they are writing about. They have either spent a lot of time studying on, around, or in this field, as well as studying the works of other professionals.
This person would have left no stone unturned in their search for the most accurate information, and usually a great deal of respect from their peers and superiors. This is all very important, as it helps to provide that there is truth behind the information, and that it is fairly accurate and trustworthy as well. Which leads us to why it is necessary to use credible sources in our work. It will add strength and "weight" to our writing, allowing our readers some degree of comfort that what they the information contained within is correct.
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.