Rihanna, Usher and Justin Bieber were walking over a bridge..........

Rihanna trips and gets her head stuck between the railings.

Without a sideways glance, Usher pulls aside her G-String and fucks her senseless.

He stands back and tells Justin, "Your turn!"

Justin burst out into tears.

"Whats wrong?", asks Usher.

Justin sobs, "My head won't fit in the railings."