I don't know all the words, but Avril does and (with a fellow to demonstrate on of course) performs a whole lot of enteresting actions. Strangely enough she seems to have no trouble remembering the lyrics - perhaps the remarks from Khat and Essex Girl about how things get into her brain might be relevant here. Mind you I don't know what she'd want in return for teaching you . . . . .

Seriously there seems to be a version posted here.