Origin: Internet Slang – Slow spelled in reverse
WOLS is often used in online forums as well as text messages to tell people that they are slow to realise an event or meaning of things. This often occurs when someone starts a new thread on the forum telling people of a piece of News that most had already knew.
Forum Poster A starts new thread: “To commemorate 50 years of National Service, former and current National Servicemen will receive a NS50 Recognition Package comprising a $100 voucher ………”
Forum Poster B: “Eh…you damn WOLS leh, I already spent the $100 voucher…