Actually, it's tough, because he's not really screwing up. He seems to be doing a good job, but we're there just in case — the first time he does anything.
Notes from Wikiquote
Smith, Kerry L. (2001-07-05), "Jimmy Fallon". Rolling Stone. (872):153
Quote text and notes from Wikiquote: Jimmy Fallon (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.