Sleeping Betty (9:17)
IMDb; NFB; Short of the Week; Vimeo; Wikipedia; YouTube

This was released in 2007, but I first saw it in 2018 (while browsing a list of short films on "Short of the Week"). But it looks more like something that would have been made in the 1970s, I'd say. It's about a girl who won't wake up, and everyone in the royal court is concerned. They try all kinds of things to wake her up, to no avail. They call in a prince, who takes quite awhile riding to the castle on his horse. And um... there's a blend of modern and medieval motifs throughout the film. And the whole thing is very weird, but funny. (It's a Canadian film, but it rather puts me in mind of the sort of animated sketch you might see on Monty Python.) And I guess that's all I want to say, because I don't want to spoil any of the actual gags in the film, let alone how it finally ends.