Sockball Wacking

Googled my way to this mention of a sockball experience:

> Seem to remember girls putting tennis balls in old long white socks,
> standing against walls and just wacking it left and right - lifting legs
> and arms in a kind of knife throwing way in order to dodge
> the sockball they were continuously bouncing off the wall. Or was that just
> *my* primary school?

Clearly, the sockball, as we perceive it in its expanded definition, is a source for games as yet unimagined.