I put my lips to the tip, applied some suction and it slipped right in. I was rewarded with a moan of pleasure from the other side of the wall. The feeling of that warm cock slipping into my hot, welcoming mouth was indescribable. It was hard, but yielding. It felt very smooth and warm in my mouth. I could feel it throb and twitch as I worked it into the back of my throat. My head bobbed back and forth working the cock in and out. The guy started to buck his hips, fucking my face. My mouth quickly filled with saliva so I paused just long enough to spit it out all over his cock. That made it look even more incredible, all wet and glistening. I quickly took it back and continued to pump it. The leud sucking sounds I was making must have been heard out in the hall...