does anyone have experience in stealing alcoholic beverages?

I just turned 19 but my friends in my school are still underage, and it's really hard to get beer from the liquor store without getting in trouble, since i have no connections to anyone who can buy it for me. how do people steal alcoholic beverages? i thought about using a bag or putting it in my jacket to get out but there is still a security camera there. if you have any tips, please comment. thanks :)