Jimmy Fallon is at his best when he's helplessly corpsing during a segment — it doesn't matter whether it's mid-interview with Sarah Paulson or, in the case of the clip above, during a spoof commercial for a dodgy law firm.
Demi Moore, Justin Hartley, and Mark Ronson all join Fallon, and they're all just as helpless in the sketch as he is.
The best bit? Moore attempting to say "jalapeño poppers" and absolutely losing it.
