We finally have an answer to the age old question:
What happens when a British journalist runs into television legend Henry Winkler on the street?
That's what went down this week when BBC reporter James Landale went around asking locals how they felt about plans to possibly expand Heathrow Airport... only to become tongue-tied when a pedestrian turned out to be The Fonz himself!
Watch now as Landale tries to get his questions out and as Winkler comes across as calm and as kind as we'd expect him to be. Funny, unexpected stuff: