What is it with the kids who have it all these days?  First Katy Perry can't resist "punishing" the popular boy who didn't know she was alive in high school. Now Shia LaBeouf -- a self-admitted role-scoring luckbox these days -- is using precious movie-pushing airtime to pour new salt on an ancient wound.

Apparently, Shia and ex-BFF Frankie Muniz had some kind of tiff back when Malcolm in the Middle was big, and Frankie was a big star -- which was sometime in the last century!  Now that Shia's having a great run -- and the great good fortune to be among Steven Spielberg's new faves -- you'd think he could let bygones be bygones.  But, not only is he not taking the high road, he's picking on Frankie when his career is in the breakdown lane.  Low!  And rude, rude, rude.

Read about it on Popeater.com.
Hear the interview on The Bert Show.