I have had numerous encounters over the past nine years, and in that time I only had one escort who did this (that I know of). He was having issues with getting hard, and he asked if I minded if he did something about it. I said sure, then was quite surprised when he pulled a syringe out. He didn't do it in front of me, but after he was rock hard and when we finished up he explained to me what it was and said it worked much better than a pill.