Ah Beng with a black eye...

Ah Beng walked into class every morning with a black eye. After a while his teacher got worried and asked him about it. Ah Beng's answer was: "Our house is very small miss. Me, my mother and my father, we sleep on the same bed. Every night my father asks, 'Beng are you sleeping?' Then I say 'No' and then he slaps my face and gives me a black eye." 

So the teacher says to him, "Tonight when your father asks again, keep dead quiet and don't answer."

The following morning Ah Beng comes to school and his eye is fine, so the teacher breathes a sigh of relief. But the day after that Billy comes back with a severe black eye again.

"My goodness Ah Beng, why the black eye again?"

He tells her: "Mam, Dad asked me again, 'Beng are you sleeping?... and I shut up and kept dead still. Then my father and my mother started moving at the same time. Mom was breathing erratically, kicking her legs up frantically and squealing like a demented hyena on the bed. Then my father asks my mother: 'Are you coming?' Then my mom says, 'Yes I'm coming, are you coming too?' and my dad answered 'Yes'.

They don't usually go anywhere without me so I said 'Wait for me'..."