National get back with your ex day is a day where you can ask your ex to get back together and they have to say yes even if they’re in a relationship. After the day is over, you're time is up
you: yo it’s national get back with your ex day. wanna come over?
ex: idk about that you: you can’t say no. i’ll see you at 1
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.