If there's a legal age in the country you live in, the person that provided the alcohol can get charged if they get caught. If you were the one that chose to drink it, then they might still charge the person that left the beer lying around at your reach.
Some families in drink socially or religiously, although it is still illegal, the government is a lot less likely to get involved with religious or cultural beliefs so you might not get in trouble for that, but note that it is still illegal.
you must be 21 to drink alcohol
No, you can be charged with underage use.
If you're under the age of 21 and are the designated driver at a party, could can usually be arrested for underage drinking!
If it wasn't involving a vehicle, usually nothing.
don't get caught
You would be breaking the law and you and the person you sold to would probably be going to jail.
No, you cannot drink underage in any civilized country.
You might get dizzy
Pay your ticket and stop doing that.
u die
It slows the bodys functions
Yes, they can. In ORC 4301.69(B) It clearly states - "That beer or intoxicating liquor will be consumed by an underage person on the premises of the accommodations that the person engages or uses, unless the person engaging or using the accommodations is the spouse of the underage person and is not an underage person, or is the parent or legal guardian of all of the underage persons, who consume beer or intoxicating liquor on the premises and that person is on the premises at all times when beer or intoxicating liquor is being consumed by an underage person;" ORC 4301.69 deals with underage persons concerning (liquor laws). It states many times over that an underage spouse or child is free to drink in their guardian or parents presence.