Could it be? Could it be that I have finally given in to the pressure and decided to draw something naughty? Well, it wouldn't be the first time, BUT, this is ponies! What's he hiding under that hat!? What is it!? The answer, in the next upload.
EDIT: I guess, just to keep people's jimmies unrusttled, I am tagging this as "Mature: Moderate Sexual Themes" since it is suggested he might be holding that hat with his member. Spoilers: He is not.
Art by James Corck. Oil Slick comes from "Old Appleoosa: Bounty" which you can find here [link]