Remember the old days when Will Ferrell would make Jimmy Fallon crack up in front of a live studio audience? Well, the old days are new again as Ferrell showed up on Late Night with Jimmy Fallon, ostensibly to promote his new movie The Other Guys, but also to make merry in a sketch wherein he made Fallon a deli sandwich with fake arms.

Fallon loses it even in the set-up, and the sketch itself has just the right amount of giggling, cold cuts, mustard, meatballs, fake arms and hands, and Will Ferrell. Tasty. This is why they're called "sandwich artists." You can watch it all over again, or even for just the very first time, right now. Roll the clip!