Origin: Internet slang/Singlish/Hokkien – slang for Tampines, a place situated in the eastern region of Singapore
10KKJ is an internet slang that is used to represent Tampines, a town situated in the eastern region of Singapore. It is not commonly used in conversation but frequently used in online forums, text messages and is usually communicated between males.
How it came about:
10KKJ > 10 Ku Ku Jiao > Ten Penis > Tampines
Ku Ku Jiao is the hokkien word for penis, so 10KKJ in english is literally “Ten-Penis” which phonetically sounds like Tampines.