"Ahm ah dottled or dreamin? I swear reindeer keep fleein bye an hoverin aboot as if they’re working oot whits shinin oot o oor windae."
dottle: witless, become crazy or confused, in a state of dotage.
"Am I befuddled with age or dreaming? I swear reindeer keep flying bye and hovering about as if they are working out what’s shining out of our window."
The song about Rudolf the Reindeer should be enough of a clue for those that don’t get it.
If you don’t know the song then you’re stuck. The story of the song is all about navigation on dark and stormy night that helps Santa get the job done.