Day-resters; casual clothing worn around the house whilst resting. This is usually done during the day, making them different from pyjamas.
Day-resters are usually worn while watching television, lying on the couch or playing video games, and can be any comfy, loose-fitting attire worn for the sake of comfort, not fashion.
``Hey man, I'm not up for going out today. Think I'll just throw on my day resters and chill.''
Or
``It's been a long day at work. I''m gonna change into my day resters and hang on the couch this afternoon.''
OR ``Why you still got your day-resters on child? We're going to church!''
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.