Akon: "I'm Justin Bieber's Dad!"

R&B star Akon has made a shocking confession - Justin Biber is his son!

The I Wanna Love You hitmaker was pranked by Bieber this summer after the teen pop sensation got hold of his private cellphone number and started calling and insisting Akon was his dad.

And, now he's in on the joke, Akon is playing along by saying; "He's my son. We found out lately he's my son."

According to reports, Akon was initially unnerved when Bieber started calling him and asking, "Daddy, why don't you love me?"

It all sounds a bit weird if you ask me…