A hot piss in the forest! [Part 1]

Lucy is following her Mistress tethered by her leash on a stroll through the forest. It has been a long walk and Lucy's bladder is about to burst. She asks permission to go. Her Mistress points to a tree and tells her to make it quick!
Lucy hastily heaves down her rubber shorts and props one high-heeled foot against a tree. A good strung gusher spurts out onto the grass below. The warm amber liquid pools up into a little mud puddle before sinking into the forest floor. When finished she totters off behind her Mistress again, with bare ass waving in the wind.