Just because Jonah Hill is suddenly svelte doesn’t mean he can’t still get hurt feelings.

The ‘Moneyball’ actor appeared on ‘Late Night with Jimmy Fallon‘ to show off his recent dramatic weight loss and to tell the host about his many upcoming projects, one of which is ’Allen Gregory,’ a new animated series on Fox. But Hill had a couple of unpleasant encounters with actor Matthew Morrison at the Fox upfronts, and used his ‘Late Night’ appearance to call out the ‘Glee‘ star publicly.

“Matthew Morrison, you better bring your s*** next time I see you, dude,” Hill said as Fallon giggled.

Morrison’s camp has yet to respond to Hill’s tongue-in-cheek challenge, but may we suggest a ‘Glee’-style sing-off to settle the score?

Watch the interview for the whole story: