I'm only interested in the dowtown baby song. If they learned it at school then I think I know. I learned it at school, too. Mine might be a different verison, though. I learned it in primary school when I lived in South Carolina.

Downtown baby, downtown, the roller coaster
Sweet, sweet, baby. Sweet, sweet, don't let me go.
Shimmy, shimmy, coco-pah. Shimmy, shimmy, down.
Shimmy, shimmy coco-pah. Shimmy, shimmy, break it down!
Ohh, swish-sha-wa-wa, a biscuit. I found a lover, a biscuit.
She's so sweet, a biscuit. Like a soda sweet, a biscuit.
Ice cream soda pop, cherry on top, bop!

It looks a bit silly, but it's actually a really fun hand game. Of course it varies. Instead of "lover", you can say "nother". Like another? It was really fun when I was little and really popular. It doesn't make a lot of sense but... well it's just a game! Anyways, I always liked it, still do.