Buying cigarettes for a minor

I did something that I seriously regret.
I bought my teenage son a pack of cigarettes.
I didn't know that it is illegal to buy cigarettes for kids.
Now I'm spending a year in jail because of what I did.

It was immoral to buy cigarettes for my son who is underage.
I'm scared to death because the cops have me locked in a cage.
I have something to say and I want to make myself quite clear.
If you buy tobacco for a minor, you will also go to jail for a year.