I regularly (week days mostly) go hiking or cycling in Derbyshire and end up wading into some river, rolling in some mud, or swimming in a lake, fully clothed. Whilst this is usually in the kit i am wearing (several layers of hiking gear, or cycling gear, respectively) I'll often take a backpack of clothes to get messy/wet in too or instead - this includes denim (usually tight), other sportswear, business attire, costumes, even leather/latex. I'd love to share a hike/cycle with anyone, m or f (or trans), gay/stright or other, for some mutual fun and shared experience. If you fancy it (wed or fridays are my best days) let me know a I'd like to get to know you first and then plan some discrete fun with someone I can trust and vice versa.
Sadly I'm way too far away to join you unless I was taking a holiday in that area, but the idea of going for a ride or hike and 'accidently' ending up in the mud does appeal...