This will be the first story i have ever "published". Okay so it's 2019 and i'm 29 with a 55 year old super milf with huge tits, big ass, small waist, and a pretension for going naked whenever possible. We met (2018) when she caught me covered in mud and our relationship skyrocketed from there, for about 2 years and seven months (i have a million stories). Well... It's my birthday and she says she has a special surprise for me, so we go out to the place in suspense and lo it's a big slimy mud hole! Fueled by a natural spring and dryed up PERFECTLY from the summer heat. And it's also somewhere very public, not to worry though up in the hills the hippies and naturalists are cool with ALL kinds of stuff (ashland is a dope town) but for the moment all is still and quiet. So i strip and get in immediately and roll, wallow, and slop around in the perfect mud, i look at my companion and she is stripping as well after watching me enjoy myself, i get a big stupid smile on my face and just when i'm about to say something to her after she gets naked she reaches into her bag and pulls out a strapon... A thick 12.1/2 inch long horse-cock strapon. And as she starts to put it on i can say nothing, when she starts walking over to me with the strapon stiffly swinging back and forth i suddenly say "are you actually going to fuck my ass in this mud?!" And she says "of course! It's your brithday butt fuck after all!" So she gets down in the mud and lubes up and i say "what if someone catches us doing this?!" Her response "then their going to see a pig get fucked today" and then slowly pushed the strapon into my ass with incredible muddy sounds emanating forth (don't worry i'm accustomed to stapons) she filled my butt with mud to the max! And when i talked back to her she would splat my face into the slime and all i could do was blow mud bubbles. I got fucked like a pig on and off for about two hours... Until it was her turn. Revenge is sweet... But i asked for more before we went back to her place.