The expression "Langdon" was coined during the pandemic crisis in the middle of Swedens deepest forests. The term has it's origin in the beloved movie adaption of Dan Browns trilogy depicting Robert Langdon; portrayed by Tom Hanks. Robert Langdon is a nifty but occassionally low-gifted character with distinct autistic features during the worst possible times. So a "Langdon" is therefore a remarkably special individual whom enters the realms of fantasy during the weirdest occasions.
"He's such a fucking Langdon, idiot!"
"Don't be mad at Robert, you know - he's a bit of a Langdon.."
"C'mon, stop being a Langdon you - stop licking the painting!"