The act of a male's large balls slapping up against a female's butt hole while in the missionary position.
Adam was so deep in Eve during their first sexual encounter that his large balls ended up ball spanking Eve.
by veganrocker3 June 23, 2009
Bas and Jasper were fighting yesterday but Jasper gave Bas a Ballspank so Bas couldn't fight anymore.
by Zavi April 19, 2010