Round round get around,
whack it around

The story:

Told some friends many years after I started thinking this Beach Boys song was about m**********n that I often wondered why a group with such a clean cut image could come up with such dirty lyrics. I was met with blank stares. I quoted the lyrics the way I'd been hearing them for many years and was met with much laughter and was told I must have a dirty mind (probably true)!