You're missing some of the best fun. I hike, bike and do lots of other outdoors stuff just so I can pee out there.   Unless you're pretty obvious, most of the time nobody will even notice you exposing yourself. And you can always distract their attention by doing something else while you relieve yourself.

What a delicious perv you are….

Did you comment on it at the time? The next step may be to reciprocate. 

Would love to watch that on video!

When you’re desperate, is it messy or laser like?