I once masturbated onto Planet Earth ...
... as part of a big "lifetime ambition realized" bike trip, I showed up at White Sands one fine summer morning. The park opened at sunrise, but the gatekeeper was super nice and let me in a few minutes early. So I found a spot out of sight of the road and ... a notion took me. I took off my layers of biker gear, sat myself down on all that cream-colored selenite sand, and saluted the rising Sun.
... Minutes after I was back in my duds, another car full of Dutch (by the sound if it) tourists came past.