Be sure to set out a glass of milk and a print-out of any emails containing evidence of collusion with the Russians this year: Robert Mueller is going to shimmy down all of our chimneys this December. Last night on The Tonight Show, Jimmy Fallon busted out his still-very-impressive impersonation of Bruce Springsteen for a cheery holiday parody of the Bossâs version of âSanta Claus Is Cominâ to Town.â Belts Fallon: âPass tax plans when weâre sleeping/You know thatâs a mistake/The midterm electionâs cominâ soon/In 2018, youâre gonna pay!â âTis the reason for the season!