For this to work, your cock has to be really dry. If it's moist at all it won't work, and you'll see why. Put either a doubled up long piece of toilet paper down on some carpet. (you can even try using a sheet of printer paper which is nice and smooth). Get down in a pushup position and balance yourself on your knees. Then you can start rubbing your dick starting from the bottom of the toilet paper, and rub it slowly up the length of paper. then go back to the bottom and keep doing that. I use to like thinking about rubbing my cock between someone's ass cheeks while doing this to help the fantasy. Soon you'll feel your cock start to tingle and then you'll want to go faster and faster until you shoot your load. it's always hot watching your dick while the cum flies out. Wish I could watch you do it enjoy!