Carrie Prejean is dating Michael Phelps! Does Granny know he hit a bong?

Michael-phelps-mom Miss California Carrie Prejean's wacky granny Jeanette Coppolla is blabbing to reporters about her anti-gay-marriage granddaughter dating Olympic swimmer/bong-puffer Michael Phelps.

"Carrie and Michael have been out to baseball games and lunch," Coppolla told RadarOnline. Apparently, he calls her when he's in town and they go "out."

Granny says Carrie knows that Michael has dated a lot of girls, but she enjoys going out with him and isn't serious about a relationship with him. 3175413541_93e4066e8f-1

She says, "He's a nice guy and she likes him."

That's more than Jeanette told Billy Bush earlier this week.

She clammed up when he inquired about Phelps.

"That's not appropriate to answer right now. He's a great man. ...You can call me on a later day and we can talk about that."

Um, has anyone told granny about Michael's pot smoking? We kinda don't think so.

Oh, is she gonna be mad ...

More Carrie Prejean dish:

Miss California's grandma takes on Perez Hilton! Go, Granny, Go!

Did Carrie Prejean's anti gay marriage views cost her the Miss USA crown?

Photos: Michael Phelps. At right, Carrie Prejean: Credits: WireImage/Miss California Pageant.