The phrase "sheep dipped", is commonly used in intelligence circles. It's a way of saying someone has been given an alternate identity. The best known example being Air America, but also in many other covert ops applications. Not necessarily military. "Those who were accepted got "sheep-dipped" and vanished."
Dipping a sheep gets rid of creepy crawlies. Dipping a person figuratively gets rid of details of his/her former life.
SHEEP-DIPPED - Stripping a soldier of his military uniform and identification so he can pose as a civilian during a covert mission.
Lee Harvey Oswald was "sheep dipped" in order to carry on his involvement in the CIA's clandestine activities.
Someone who is super smooth and flossy,fine, and fly A boss, dipped in sauce, a tycoon. Bay area slang by the late Great MAc Drizzle
Look at that girl right there, she's DIPPED IN BUTTER.
or
Damn that dude is fitted he's DIPPED IN BUTTER or the original
" the women like me I'm DIPPED IN BUTTER" MAC DRE
Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.
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.
I had a trucker's tan after driving for 10 straight hours on a sunny day.
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.