Justin Bieber was playing outside with his expensive toys when he really had to go to the bathroom to pee.
He runs into the bathroom and his grandma (who staying with him) was about to take a shower (all the bathrooms in the mansion were being painted.)
He looks at her crotch and says, "Whats that?" She says, "Well, it's a beaver, Justin."
The next day the same thing happens, only his mom (who is also staying at his mansion) is taking a shower. He says, "Mom I know what that is. It's a beaver, but I think grandma's is dead because it's tongue is hanging out."