One of my slaves told me about this way of masturbating that does not involve jerking that cock of yours. You need to get your cock hard, but DO NOT CUM. You will only be using your index finger and thumb and there will be no jerking involved at all, but you will cum from this. You know it doesn't take much to get your cock so excited, so you won't need to worry. You will make yourself cum, just like I say!