Dan decided that in case something negative happened because of the spray, he might as well test it on an area of his body that wasn't too crucial and that would be easy enough to spray. His belly was out, and so was his chest. He could potentially hurt himself there too easy. His thigh maybe? That's when he realized, his ass was perfect! Dan took the bottle upstairs to the bathroom, and closed and locked the door. He stripped off his pants and underwear, leaving the rest of his clothes on, before looking at his ass in the mirror.
His ass wasn't anything to write home about, just a regular if somewhat pale boys bum. It took a moment to figure out how to best hold the bottle to spray himself, but soon he managed to. With baited breath, he sent a mist of the odd spray over his ass, feeling it sink in. It felt weird, like his entire ass had fallen asleep. But soon the feeling spread from the spots where it landed to his whole but, and then to his anus. He gasped as the feeling on his hole was completely foreign, and he stood up straight as the effects began to take hold.
The effects began by the asleep feeling fading to be replaced with a growing warmth. It continued to grow and grow, making Dan pant as he tried to understand what the fuck was happening to him. That's when the heat focused and...