When you can't correctly use 'sense' or 'since' in proper context or when you can't correctly pronounce 'sense' or 'since'. Also, when you can't spell or pronounce 'cents'
"Go sit in the corner sance you want to act childish"
"I have 29 sance in my pocket"
Olsy-Sanchez: when one saves his poop in anticipation of coitus, and after said coitus, he takes his own poop and draws a poop mustache on his lover (male or female). Or, alternatively, when a man requests his female partner wear what is commonly known as a "strap-on", and said female uses the "strap-on" to enter her male subject anally. And after consummation, the male subject locates the strap-on, which has now been removed from the female, and he uses the poopy end of the strap-on to draw a mustache on the female. Olsy Sanchez
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.