A girl’s boyfriend came to her house. The girl said to her mom,

“Mom, I’m going up to my room with my boyfriend.”

The mom says, “Ok honey, you kids have fun.” When they are in her room the mom hears “Baby baby baby oh!” from the room and she walks to the door and asks,

“What the hell is going on?”

The girl answers, “Mom we’re just having sex.”

The mom says, “Oh, thank God I thought you guys were listening to Justin Bieber.”