I know how you feel. When you star watching porn, you get a little bit of sticky clear stuff that you can use as a lubricant. Normally its not enough and you'll need some lotion. After masturbating, you fell a tingling felling. You kind of feel like you don't know what it is, but you want more of it. Then, everything gets warm and you can't keep going and you feel contractions. This is when most people cum. You either need to keep going or you are going to need to wait until you can cum.