After entering her home, the girlfriend told her mother, “Mom, me and my boyfriend are going up to my room.” The mother said, “Ok honey, you kids have fun.”
“Baby baby baby oh!” is what the mother hears when they get there.
Walking to the door, the mother asks,
“What in the world is happening?”
“Mom, we were just having fun,” the girl claims.
and the mother remarks,
“Oh my goodness, I thought you guys were enjoying some Justin Bieber music.”