我老婆唔夠秤

鄭伊健

Thirteen Cheung

蔡卓妍

Yoyo Ma

車婉婉

Ms Lau

廖碧兒

Ms Lee

鄧健泓

Mr Lam

鄭中基

Bruce

林珊珊

Headmistress

May Lai Shun-Wai

Feli

Richard Ng Yiu-Hon

Professor

李楓

Thirteen's mom

錢似鶯

Thirteen's grandma

Chiu Yue-Ming

Yoyo's mother