Some fancy ponies have mistaken Derpy for the inventor Caractacus Potts, and have spirited her away, laboratory lavatory and all, to design amazing machines in a distant kingdom.
Edit: here's the film/song clip on youtube! [link]
This comic is based off a sequence in the film "Chitty Chitty Bang Bang." I was working on a serious comic when Derpy and her lavatory landed in my imagination...and I then had to draw her instead. Uh still figuring out how to draw ponies. Making this comic killed my hand, but I had a blast. Pure silliness.
Commodore Luna is from an earlier pic I painted: [link]