Do Americans really kick their kids asses when they turn 18?

My shariah islamic dumb cousin said that in Europe and America, families kick asses of their kids when they turn 18 and they have no mercy for them.

Western people also don't know how to wash their butts after they shit.

Don't call me troll. But this religious nuts dumb cousin literally said these things.

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He also said westerners are like pigs and they don't become jealous of their wives or husbands. They Kiss other people's wife in the lips and they allow it.
Do Americans really kick their kids asses when they turn 18?
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