Teacher asks, "What happened to you?"

Johnny answers, "Our house is very small, me, my mum and my dad, all sleep in the same bed. Every night my dad asks if I'm sleeping, I said 'No' then he punched my face & gives me a black eye."

Teacher thinks a moment, " Tonight when your dad asks, keep dead quiet, don't answer."

The following morning Johnny's teacher sees Johnny with a second black eye.

Teacher exclaims, "My goodness! What happened now?"

Johnny sighed, "Dad asked me again me if I was sleeping. I shut up and kept dead still. Then my dad & mom start moving, mom was breathing heavy, kicking her legs up an making noises. Then my dad asked my mom, 'Are you coming'? Mom said, 'Yes, I'm coming, are you coming too?' Dad answered 'Yes'. They don't usually go anywhere without me so I said 'Wait for me, I want to come too'."