Discovered one last night...
When you have a reasonably big penis you can lay next to your girlfriend (spoon) and rub your cock on her pussy lips and then fuck her without touching her with any other part of your body. As I discovered last night, if done right you fuck her for a minute or so before she fully wakes up, and then when she snaps to reality, her pussy is already going crazy, and in just a few minutes she cums the hardest youve ever seen her cum.