In this video, a girl tells her parents what she heard through the bedroom wall last night. She says they're both "in trouble" now, but how does she know they weren't practicing their animal impersonations?
Growing up in an actual house where there may be two or more walls between a child's room and the parents room is a luxury.
Whatever I think of the girl's dad for filming this and posting it (creepazoid), billions of children grew up listening to their parents have sex. Sometimes right next to them in a communal bedroom, tent, hut, yurt, etc.