A couple of summers ago I took a trip across country in my mini-van. I had set up a bed in the back of the van so I could stop at campgrounds and not have to set up a tent. A previous summer I had taken the same trip with a tent but one morning found an inch of water in the tent from the rain during the night; and one night the tent and all its contents, including myself, were blown 30 feet across a field from a freak wind storm. So a bed in the van seemed like a better option this time around. I also had a small fan with me and if the camp site had electricity I could plug it in and it would help me stay cool on warm summer nights.
One night in July I was staying at a campground in Nebraska. It was pretty warm so I was lying nude on my sleeping bag with the fan blowing on my face when I decided to rub one out before going to sleep. I don't know how I thought of it but I put the fan between my legs with the air blowing directly on my balls. It added another whole dimension to the experience as I played with my penis. After several minutes of pleasuring myself I had 7 or 8 powerful contractions as my cum shot out in the best orgasm I had experiened in a couple years.
The fan is up in my closet. One of these days I'm going to have to get it down and see how it works a second time.