LeoLiennod - is a fictitious name used by Leo Donneil Weatherspoon for his company, leoliennodPRODUCTIONS LLC. The company is A DIGITAL MEDIA PRODUCTIONS COMPANY; it provides services in music production, social media management, YouTube videos and Android apps via Google Play Store. The name "LeoLiennod" is simply the name "Donneil" spelled backwards. It appears that Leo Donneil Weatherspoon has chosen to use this name via google search results to represent himself as an artist.
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.