On the upper deck of a bus, late one evening after a few drinks. Had been rubbing up each other, then last people got up and left. With only two of us, he untie the zip and had me hard in seconds. He slipped over and started on my cock. We had a few min before our stop, so had to get up and off. When we did we headed straight for the nearest stairwell, and continued with blow jobs before fucking each other. This was a long time ago when cameras and security doors were not a concern.