I have a horse who was born with a compressed air gas tank. From the time she hit the ground until today she has blown a steady stream of flatulence. And not the quiet whooshy sounding ones, noOOooo, the full on butt-trumpet sounding ones.
Riding down the trail or around the arena horse farts once or twice. Friends give a little giggle. Second and third time time, "WTH?" Fourth and Fifth time, "Nobody light a match!" Six and seventh time, everyone rolls off of their saddles to the ground laughing.
One time I was grooming her and I counted up to NINE.
Saw a horse at a show once. Lovely hunter. Big gray. Classy looking. Ripped a huge butt trumpet (my new favorite term, BTW) at Every. Single. Fence. Bigger the fence, bigger the sound. You couldn't help but laugh.