My families ranch had a few horses we would rarely ride. One time I was riding with my grandpa and grandma, as I've mentioned my family was nudist so only I wore anything which was some shoes because I was young. I remember this day especially because my grandpa never had a erection but today he had one all morning he was even joking about. He actually had a huge dick covered in thick grey pubes. I remember walking by him and he stopped me and pointed at it and said "this is why your grandma loves me" he then grabbed it by the shafts and shook it saying "Yeah, your moma came from here." He then walked off to ready the horses. I'll be honest seeing my grandpa bounce around his huge erection getting the horses ready got me hard. We werent riding far