Back in college I had gone home for the summer of my freshman year. My girlfriend was very excited to see me but we didn't get anytime to be alone the first 2 weeks and it drove both of us crazy.

Her parents invited me on a road trip with them out of state and I jumped at the chance to potentially get some "quality time" with my gf. The day of the trip they picked me up from my house. My girlfriend knocked on my door and came in long enough to show me the bright red lacy thong she was wearing underneath her shorts. Her parents were driving a larger van so they could fit all of the luggage so it created a barrier between the front of the van and the bench seat her and I were sitting on.

As we got on the road she complained she was cold and got a blanket to cover us up. She winked at me as her and slid into my shorts and started rubbing me through my boxers. As I got hard I shot a look to the front and realized with everything between us you couldn't see anything from about chest level down.

As she moved her hand inside my boxers to stroke me I started fingering her. Before it could get much further her mom started paying attention and we quickly stopped. We then decided to "nap" and laid down across the bench, her in front of me with her back against me and covered under the blanket. Being totally out of sight now we started making out and touching more under our clothes. We each pulled our shorts around until I was able to rub my cock against her pussy between her thighs. We did this for a bit longer until she whimpered for me to put it inside of her. We didn't have a condom and I heavily hesitated before just saying fuck it and sliding myself inside.

Her parents were talking up front because we apparently had gotten a bit lost so they were distracted as I slowly fucked their daughter in the back of their van. We had to go very slowly because she was beginning to moan and was biting the blanket to muffle it. After awhile the slow movements weren't enough so I reached around and started rubbing her clit. Not long after she started to cum and that set me off and I shoved myself all the way in and held still as we both came.

Shortly after that we stopped at a rest stop because we had gotten very lost. She jumped out of the van and ran to go clean up and ended up coming back without her thong on because we had soaked it.

And that's one of the riskiest sexual things I have ever done.