wa lao

Best definition
wa lao
Wa lao also known as walao and wa lau
Malaysian/Singaporean slang
meaning “OMG”, “Wat the!!”.

Wa lao, that guy pwned me with a knife. (in CS)

Wa lao-eh, triple kill loh! (in D.o.t.A.)

wa lao: define #2
what the hell
*Eve spills tea on adam*

Adam: WALAO eh so clumsy!!