I found that very un-sexy, and discovered the best position for me was to jerk off while on my knees, holding the cup below me like I was asking for change on the street. Often this chair will be covered in butcher paper. They will probably have a lounge chair set up for you. It’s not easy at all - unless, maybe, you have done porn.
You will be sitting there in one of the strange jerk-off rooms at a donation clinic, and you will have to get the cup (a small, plastic cup like a urine sample container) in the right position and squirt in a precise yet still orgasmic way that you probably have never done before. No one tells you how difficult it is to aim your ejaculate.
