I found a high-paying clinical trial part-time job on the internet. I thought it would be too easy, just taking medicine and spending a few days in a room... but for some reason, I ended up alone with a girl in the room!? But there was no conversation and time just passed... Then the girl suddenly touched my dick without saying a word and asked me to cum inside her, which left me confused! Apparently, the girl's pay depends on how many times I cum inside her!? Even after cumming, she kept my dick hard and kept asking for more, so it was actually a super erotic but extremely tough part-time job!