Strange things happen in courts these days David. In many places, you can be jailed just for spanking a child.
That's a different story. A parent does not have the right to abuse a child so there is a legal, but imperceptible, boundary going from spanking to abuse. This imperceptible line may be drawn at lasting marks (welts and bruises) or in the case of using a belt, whip, lash or instrument other than the parents bare (open) hand.
There's a big difference in the law concerning a minor's processional rights vs. their human rights.
Let's discuss Susie for a moment...
Fifteen year old Susie purchases a laptop on sale from Best Buy for $750.00 USD under a no-return policy.
Susie takes it home and 10 days later Susie's father finds the laptop. The father takes it back to Best Buy for a refund.
Best Buy says it was bought as-is and the sale was final and can't be returned.
Is that correct ?
No. The laptop was sold to a minor and minor's can not be a party of a contract and thus Best Buy's on sale no-return policy is null and void. Best Buy needed to secure the parent's approval for the on sale no-return policy to be in effect.
This is why you see on TV ads a qualification that the purchaser "must be over 18."