does anyone know where to find pics of ball fucking..just like tit fucking only with balls pushed around a sliding cock? what is the name for it? what do i search for?
What you're describing is often referred to as 'pendulum pounding' in the pornographic community; not to be confused with a 'whirling orbit', which is when a guy gyrates his balls against an erect cock; or a 'black hole', which implies a vacuum and a strong pair of balls (figuratively and literally).
Your favorite search engine will likely yield a few interesting results with those terms. Best of luck!