1. "chng lan"
direct translation - 'disguise as a penis'
actual meaning - to pretend to know something or overact; the act of concealing the identity of something in a stupid way
eg: "Seng, lu mang CHNG LAN lah..."
[translation : "Seng, don't be a fool lah.."]

2. "cheh kong"
direct translation - 'green ???'
actual meaning - in a panic situation; clumsy; difficult to handle or manage a situation
eg: "Seng, mai CHEH KONG, ban ban lai."
[translation : "Seng, don't panic, do it slowly."]