This was very fun!
I do wish I could speed up the dialogue. I read pretty fast and tend to get a little frustrated staring at text I already read thirty seconds ago. Related, there were a few occasions during cutscenes where Maryo would pause in talking/moving long enough that I was briefly concerned something had broken.
One actual bug - on fighting the boss (first boss? I did not manage to complete the game), I died and the camera did not recenter on Maryo. I'd respawned entirely off screen too.
Overall, absolutely loved the humor, and the platforming felt very solid. And I emphasize that last point - platform physics are tricky, and these felt really good. Definitely planning to play again later when I'm more awake, and seeing if I can beat it. ^_^