Wow! I am sitting here at a ridiculous hour googling cause I can't get this song out of my head. Not sure of exact words. Glad I'm not the only one! I played it at Girl Scout camp years ago, and what I remember it sounding like was..
Oh...Crocadilly omar (oh my) croc, croc, croc
Dance to the chigger, chigger chigger rock
Fallo, Fallo, Fallo, Fallo, Fallo
Fallo hop scotch in the mud.

Sound to silly to explain to my kids, was hoping to fing the real words. LOL Hope this helps someone though.