There are two people on top of each other in bed

A five-year-old Mikey asks his Grandpa, “Grandpa, what do you call it when there are two people on top of each other in bed?”

The Grandpa feels very uncomfortable but decides not to confuse the child and bravely says, “That’s intercourse, my boy.”

“OK,” nods Mikey and off he goes.

He comes back after five minutes and says, “Grandpa, that’s not right. I’ve just spoken to mom and she said that it’s not called intercourse but a bunk bed!”