I stood back up and Mark pulled me against him, his tongue slipping into my mouth and tasting his own cum; my own cock was desperate for release and Mark obliged, undoing my jeans and slipping his hands down the front, massaging my cock and balls. He commented that he liked the feel of my shaved cock and balls and then said outright that he wanted my cock up his ass. He turned around and spread his legs as he leant against the wall, his toned ass pushing against my cock. I used some of my own saliva to lubricate my cock and pushed against his tight hole. Mark moaned gently as my length slid into him; he took my cock easily enough so after some gentle thrusts I sped up and started to give him a really hard fuck, pulling his head around so I could tongue his mouth. Mark was pushing back against me, urging me to fill him with my cum and after just a few moments I felt my orgasm start to build up as his tight ass gripped my cock. With one last hard thrust I started to cum up Mark's ass, feeling the pleasure of the release and the dirtiness of fucking this stranger in the toilets.
My cock eventually stopped spurting and I slowly withdrew, Mark immediately turned around and knelt down, taking my semi erect cock into his mouth and cleaning the remains of my cum from it. I could see that as he did this he was fingering his own ass, using my thick sperm as lubricant. He then used the same fingers to slip into my ass whilst he licked at my balls; my cock started hardening again as he finger fucked me with two fingers, lubed by my own cum, but just as my cock regained it's full solid state, Mark got up and said that was just a taster for later, if I wanted to join him and his friends at his flat. The thought of my fantasy, being gang fucked, flashed through my mind and without hesitation I agreed. After fixing himself, Mark said he had better get back to his friends and left the toilets, leaving me with the taste of cum in my mouth and an ass aching to be filled after his teasing. When I went downstairs a few moments later I walked past Mark and his friends; the way they were looking at me they obviously knew what had just happened but I didn't care, I was too busy sizing them up and wondering if I would be able to take them all later on; Kat was going to have a surprise when I went home smelling of cum and with a used ass...