The act of defecating on a laptop keyboard, then closing the laptop to mold the feces into the shape of a Belgian Waffle. The laptop is then left closed until someone (preferably the owner) opens the laptop to discover the waffle. This is typically performed as a final act of defiance when one's employment is terminated.
It is also simply known as a "Belgian" in corporate culture.
After Reginold was notified he would be fired for stealing office supplies, he left a Belgian Waffle on his superior's Dell waiting for him overnight.
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.