I would watch till they finished and then see if they cared to chat about it. I would be rubbing myself for sure and hopefully let them see how much I enjoyed it.
enjoy the experience from afar
I'd watch! ....and maybe get a picture or two. haha
Open a book on how long they'd last with an audience and who would cun first!!
Just as well I had my vidcam with me..hehe
Well, you did say "right on the side of the trail", so it would seem they are excited by the prospect of being seen.
I would stay on the path, and watch. When they did notice me, I would smile and offer silent applause (the two handed type).
I have friends that were "caught", and they commented that being caught just made it more enjoyable.
They are in the open for a reason...I'd watch, make myself be seen...see what happens from there...
i would join in if they didn't mind
Watch, clap at the finish!
I'm with buz on this one. Snap a few shots and share with a selected few.
Then I'd be on my way.
If they were women, join in, otherwise.. smile, walk past and let them enjoy their time together.
MsTara mmmmmmmmmm 
Definitely watch and masturbate
^^^not a bad idea there^^^ ;)
my response would be tempered by who I am with. my mother & her church friends? probably hurry past. my SO or by myself? masturbate. when my classmates & I walked in a couple during college, we walked out & laughed about it, especially since they were in the next room to our classroom & we could hear them during lecture! lol
I'm pretty certain I would watch from afar...
watch.... but not from too far away.... and certainly my fingers would find their way to certain sensitive parts of my own anatomy.... oh my.... the thoughts....
Mumble an embarassed 'sorry' and run away....i know, i'm a chicken!
I would inquire if they needed 'assistance'
Veni, vidi, vici" Julius Caesar 47 BC
I'd masturbate in the open in the hopes that they would see me and ask me to join in their fun and games!!!
Watch them from where they could see me, and masturbate.
If two males, I'd walk away. If two females, I'd watch close enough to see all and masturbate. If a male, female couple, I'd watch close enough to see all, masturbate, and join in if asked.
