Mopedbart means "moped with a moustache" in Norwegian.
The guy who’s singing it wears a moustache and rides a moped.
He looks cool and easy while he is wandering aimlessly.
His song spreads bliss so infectiously that I think it can work even if you don’t have a moped to ride.
Try it sprawled on your sofa!
Just don’t forget the moustache.