while masturbating http://jalopnik.com/5242358/remember-to-close-your-sunroof-when-masturbating nothing graphic but still probably nsfw.
That's... epic. I think the part that made me laugh the hardest was when the guy started waving at the camera.
the title of the thread made me think you were referring to the sunroof flying off the car in Star Treck. Just saw it last night haha.