My sister and I used to play it and it was similar to one of the earlier version (the back rhythm, not the clapping; I've never heard the clapping). It went like this (pounding the back with a rhythm):

Concentration, relaxation, people dying babies crying concentrate concentrate.

Then it was the yolk, knives, and spiders, and we only very rarely did the empire building one or the cliff because we didnt know what the colors meant. what do they mean? But anyway, glad I finally remembered haha cuz I forgot this chant like a year ago lol