It does look set up to me - the children have obviously been taught the moves.

You really think it's "set up"???... It doesn't look like that to me.. It's looks like a dance contest at a birthday party.

I'm older than you thor, so defer - or expose your hypocrisy.

Perhaps when you reach my age you will realise what a fool you have been (but I doubt it).

From the way they all dance erotically from the beginning, I deduced they have been coached.

There's a useful Wikipedia article on perreo. Significant to our discussion is that this is the standard dance associated with that type of music. Hence the uniformity I was concerned about, which shows that I was looking at the situation from a too Western point of view.

Long ago the church I was at ran junior discos, and certain songs induced in all the participants a common style of dancing, because that was the 'correct' dance for that music. One was 'Time Warp' - the kiddies all knew the dance, including pelvic thrusts. I'm sure the same dance was common all over the US. People didn't get upset about how inappropriate it was, partly because they were culturally accustomed to it, and partly because for most participants it was in practice quite innocent.