mrsmopp. I think the ending of Bluebells, cockle shells was another 'When I call your birthday, please jump in"...which meant you'd join in, skipping into the long rope, then the rhyme would be repeated, but telling you to jump out, and if anyone got caught in the rope, they'd have to take a turn at swinging it. There's a very interesting book written by Iona and Peter Opie - 'The Oxford Dictionary of Nursery Rhymes' that explores the roots of not only nursery rhymes but skipping chants, 'dipping', circle songs, etc., looking at their regional roots. Unfortunately, these are all now mostly dim memories held within a school playground.