Haha! I used to ride this mare named Daisy and my friend would ride her sister Dixie. Both horses were trail horses primarily, so the opportunity to "do what they wanted" was often unavailable on the trail. But I do remember one day when we took the two mares out bareback and let them choose what they wanted to do. We spent about an hour and a half grazing in a meadow before Dixie suddenly lifted her head and decided it was time to go home... straight through the thicket of pine trees! There was NO way to steer through those trees, so I just kinda ducked and held tight to Daisy's mane as we went through.
Then, on the way back to the barn we got into the main yard stretch and Daisy started sniffing at the ground. I shoulda known what was coming, but it still was kinda surprising when she suddenly dropped to her belly and began to roll. I jumped off, laughing as I did only to look up and see Dixie lowering onto her belly as well, my friend kicking desperately to get the mare to stand back up. Dixie just to say touched her belly to the ground before getting back up, and I hopped on Daisy as she finished her roll and got back to her feet.
It was one of the best rides of my life :) I loved those mares