A former slave who eventually became a freedmen and wrote about the horrors of slavery. He wasn't supposed to know how to read or write, but he managed to trick some white kids into teaching him anyway. Some of his ideas still apply today.
"Everybody has asked the question. . ."What shall we do with the Negro?" I have had but one answer from the beginning. Do nothing with us! Your doing with us has already played the mischief with us. Do nothing with us! If the apples will not remain on the tree of their own strength, if they are wormeaten at the core, if they are early ripe and disposed to fall, let them fall! I am not for tying or fastening them on the tree in any way, except by nature's plan, and if they will not stay there, let them fall. And if the Negro cannot stand on his own legs, let him fall also. All I ask is, give him a chance to stand on his own legs! Let him alone!"
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.