I remember watching some thing on EFUKT( best website ever BTW, I would embedd so much shit from that place if it could) where a dude stuck his dick in a glory hole and was getting a blowjob by a fairly attractive female, she like came around the corner at one point... and then a few mins into this guy comes and takes over the blow job. the dude finishes up the job and the guy walks around the corner with cum on his face. the look on the guy who just got the blowjob, was priceless. he looked green and sick, like he was about to die.