Bjørn Disease

A psychological disease that subsists in Norwegian-Americans, or in dense teenagers.
This disease causes individuals to become completely ignorant and oblivious to certain situations or surroundings that they eventually lead to unexplanatory, out-of-pocket, and extremely comical outcomes that should generally be fatal.
As a host of the Bjørn disease, one is always subjected to a get-out-of-heaven-free card.

Barquavius: Ah, I see you have gotten an ATV stuck in a 56 foot tall tree, a trombone clogging the chimney, and your legs are covered in dried cement and sawdust. How'd you manage that?
Bjørn: dunno.
Barquavius: Must've been your Bjørn disease acting up again.
David: What a Bjørn disease moment.