Oh gosh, I have a few. In no particular order:
1) Being someone's gassy pet. I like pony play, and the idea of being a flatulent beast of burden, farting right in front of my owner as they make me work and take care of me. I could even be cursed into being an actual molly mule. I especially like thinking about pulling a cart, or going on a trail, and I'm unable to hold anything in from the exertion. Noisy farts slap between my pony cheeks while my poor owner is downwind.
But they act like it's to be expected, just another day working with an equine. They may occasionally say "whew, really girl?" or make a joke about it, and apologizing for their gassy ass to people on my humiliated behalf. (˶>﹏<˶ᵕ )
2) Having a curse put on me that gives me the ears and tail of a mule. And somehow, the curse makes me fart so much worse. I go about my otherwise normal life trying to hide my long ears and tail... and all the flatus that equates to how much a full-grown mule produces in my small body. (⸝⸝⸝O﹏ O⸝⸝⸝)
3) Being someone's gassy wife! They tease me for it all the time, but they don't mind my chronic flatulence. But I do fart a lot, and they know I'm bashful about this. My spouse will keep me on a strict flatulogenic diet and sneak things like inulin in my food, or sugar free candy, so I'm always farting my ass off. It doesn't matter if we're at home, seeing friends and family, out in public, they want me to rip ass as much as they can make me and they love seeing their tiny, bloated wife helplessly farty. 🫠