This reminds me of a time my dad came to visit me in college. We went on a walk with the dog. We happened to walk through a cow pasture on the way back from some trails to my dorm.
My dad and I carefully looked to avoid stepping in the fresh cow patties scattered about the field. The dog on the other hand found this ludicrous and did a perfect shoulder roll into several cow patties, totally covered in wet and odiferous cow shit.
When this happened, we still had at least a mile to walk back to my dorm, and even then we weren't exactly sure what the hell to do with him once we got there.
My dad happened to have a bunch of stuff in his car for washing the car - a bucket, detergent, and sponges.
We had a hose on the side of the building and used that to hose down the dog and then lots and lots of buckets of soapy water.
That dog had shit way into his fur. For months after that he still had the odor of cow shit - and he loved it. Happy as can be.
That made for an embarrassing walk through campus - my dog absolutely covered and dripping with wet cow shit. Happy as can be, occasionally licking himself and obviously proud of his accomplishment. Unfortunately his friendly nature was not held back by this event, which made it all the more embarrassing.