Singapore’s taxi drivers have reached a consensus to keep their surgical masks on permanently to facilitate more effective silent judging of passengers.

The blue fabric serves as a tactical shroud, allowing Uncles to smirk undetected when you provide a destination that is "too near" or "out of the way."

"Wah lau, you think I wearing for health ah, this one is for when I see your face I can make 'tsk' sound behind the cloth," said veteran driver Uncle Seng.

By maintaining the facial barrier, drivers can also safely deploy biological flatulence without the risk of facial recognition during the ensuing chemical warfare.

ComfortDelGro has reportedly endorsed the move, noting that a masked driver is 40% less likely to be punched for complaining about the ERP.