Another one from the "random ideas originating in chats" department. The idea of a character simply having a collection of random underwear (for some reason) triggered another idea in my mind... there could be a musical number about underpants where he is wearing all these different kinds and singing about them and it would be weird as hell but hilarious. Dancing and showing off his collection by modeling them while singing a show tune of some sort.
(Do not ask me to compose, write, perform or otherwise generate music, I have zero musical talent or ability.)

Domingo is the exact guy to do this sort of thing, too. He is crazy like a fox. He also always has the best underwear (I drew him with space-themed ones this time), and he loves showing it off. I like drawing him with just a bit of a belly, I think it's cute.