Van In The Garage

One day, a kid walked in on his dad in the shower and saw his penis. He asked what it was, and his dad says it was his van. Another night, the kid walked in on his mum in the shower and saw her v-hole. The kid asked what it was, and the mum said it was her garage. A few nights later, the father walked out of the bathroom and saw the kid lying with his mum in her bed. The dad said "MOVE OVER SON! DAD NEEDS TO PUT HIS VAN IN THE GARAGE". The kid replied "Sorry dad, my minivan's already in the garage"