13-year-old friends getting drunk on weekends--what to do?

I have two friends who are both thirteen, and every weekend they would get together and I'd get these really weird phone calls. I'd answer and they would be screaming or running outside during a thunderstorm or in the rain or snow, making whale...

sounds..
When I asked why they keep doing it, they say they can't help it, they steal drinks from one of the girl's refrigerator every weekend when their parents go out and get drunk. At first I thought they were kidding, because they like to joke around, but they really sounded drunk. Only one of them really likes to get drunk, so she does it the most, and the other just calls me and tells me all the stupid stuff she's doing. I usually end up hanging up, but now that they call every single weekend, I know I need to tell somebody, but apparently I'm the only person that knows so I don't know what to do..
help?

tell their parents if you really their friend you should really do so

you dont want them to waste their lifes? do ya

Tell your parents- express to them how worried you are and how you want to do something about it but you don't know how. Perhaps they can approach your friends parents about it.

If you truely care about them, you must help them - tell a responsible adult before either something seriously happens, they become addicted and their lives get headed down destructive paths...I wish you the best !!

a lot of 13 yeer olds go out drinkin at the weekend.tell someone yooh can trust and see what they say or even ask your friends what they woold prefer cze yooh dont want them fallin oot wi u.

Just mind your business don't tell the parents talk to them

just let them have a good time tell them to stop calling you and dont drink to much other wise their life will be wrecked