John Krasinski Learned He 'Married Up' Thanks To A Sassy London Customs Agent!

John Krasinski married up — and he knows it.
How?? Well, because, a London Customs agent was BEYOND shocked to learn that The Office alum had landed British national treasure Emily Blunt. Oh, and the airport employee had no qualms about expressing his disbelief!!
Be sure to watch John (above) as he HIGHlariously recounts the encounter for Jimmy Fallon‘s The Tonight Show! Enjoy!!