John Mayer is so out of touch with the teens and tweens of today that he doesn't even know who Robert Pattinson is. What a dag...

The 31-year-old musician is feeling old because the whole Twilight phenomenon has largely passed him by.

"I've never seen Twilight, but it seems as if there are 90 lead actors I don't know in this film? Tug Tillis, Boan Joaner, Jared Vorak...Kelly Loargaarten, Keith Wells, Elizabeth Henley-Harrison, Erik McMcinson, Kyle Froam, Tiffany Grunch," he Tweets.
 
Still, it sounds like he's got a gist of things. He adds: "It's like you wake up in the morning and read 'Tyler Rashton: 'Tilly and I are just friends!' And then you just feel old."

See Tyler and Tilly at the MTV Movie Awards below