Hi Caldosch, yeah I know what you mean, I used to think this, I'm guessing you're uncut? If so the best way is to expose your head when going in, but also make sure your skin isn't pulled back tight, so have your head covered as you enter and let it naturally roll back. If you are still having issues you could try wearing a condom whilst you pump, this helped me, if it still happens I would say you're going at it too hard and need to slow down