meaning that regardless if you have a small or large penis, as long as you give the girl pleasure, then you have absolutely nothing to worry about
girl: how big is your cock?
guy: 6 inches
girl: ok, i'll go with that
guy: you need to understand that it ain't all about the size of the boat, it's about the motion in the ocean
girl: yeah, yeah whatever.
Have sex in a swimming pool and watch the waves crash against your back while you are holding the side of the pool. Fucking like crazy you can go for hours underwater. Trust me ;)
You will always creat the Motion in the Ocean by having sex in a swimming pool