It is when you get head (blow jobs), for the rest of your life from someone. It usually comes up from a crazy bet to win a football game or something else stupid.
Bristol: we are going to lose
Pat: no we're gonna win.
Bristol: ...we re gonna lose
Pat: okay well if we win then you owe me head for life, and if we lose then ill buy 50 cheeseburgers from McDonalds.
Bristol: okay fine 20 min later and after the team wins
Bristol: fuck Pat: haha hell yeah
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.