You have visited us many times before and sadly you were never able to provide a sample. In fact its become such a big thing for your male ago, that you can hold back at will for the nurses, that today will all change. They have sent me in to collect a sample and no one has ever been able to hold their spunk back from me. I tease you with my curves and dirty talk, making your cock twitch with excitement, my fingers gripping at your erect cock. This might be against policy but I don't care. As your cock slides inside my mouth it all becomes to much for you to handle and as I spit your sperm into the sample cup you realise quite suddenly that I have won, I have drained your balls and taken your willpower to hold back, your juicy spunk belongs to me now!