How a parent chooses to punish their kids is, within reason, up to them. Doing the discipline dance with your children can be fraught with danger though, especially if the punishment doesn’t fit the crime. Some parents find this out the hard way.
For one woman, her and her husband’s decision to withhold birthday presents for their teen son’s 16th and 17th birthday came back to bite them. Now that their son is in his twenties and they desperately need money for medical bills, he’s cut them off entirely.
More info: Reddit