Lindsay Lohan’s new arm attachment, Riley Giles, is denying reports that he dissed HOhan’s mom, Dina, on Myspace on Monday. Monday afternoon tabloid reports claimed that Dina asked Lindsay and Riley to be on her reality show, and that Riley posted a Myspace entry stating “ADVICE OF THE WEEK: if your a mom, with 4 kids, the best thing u can do for them right now is have a reality show. WE. DO. NOT. WANT. she had the nerve to ask us to be on. no thanks!” Negative, says Riley. He claims he has joined the Great Exodus over to Facebook and he doesn’t even have a MySpace.

Riley tells In Touch Weekly: “I don’t even have MySpace. Someone is obviously pretending they are me. I definitely didn’t say any of those things because I don’t even have a MySpace account, what a joke!”

That’s right, Riley. Clear that one up with the quickness, there’s nothing worse than a pissed off mother-in-law.