An orgy that takes place in the back off a van sometimes while it is being driven down a road.
One man to another: oh man this van pulled up in my driveway and John opens the back doors and his naked and there was a bunch of naked women in there with him and one's sucking his dick. and he says we got a rolling orgy back here. want a join us? and I say hell yeah. It was so cool hi was high on xtc and fucking this woman going down highway 25.