Jennifer Lawrence has some serious beef with 'Tonight Show' host Jimmy Fallon. The dynamic duo apparently had one heck of a J-Lo-centric plan after this year's Oscar ceremony, a dazzling routine of dancing and charm that was meant to end with Fallon and Lawrence presenting themselves to Jennifer Lopez herself, declaring, "Dance with us!"

Fallon chickened out, but Lawrence didn't -- and Lawrence is finally ready to let him have it for making her look "like a freak" in front of one of her idols.

It's okay, though, the pair sure seemed to make up on last night's show, even celebrating by playing a rousing round of "Box of Lies." And this ain't no lie -- it's unbelievable that the giggly pair managed to get through nearly six minutes of bald-faced fibs about what's in their various mystery boxes.

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