I have many not-very-fond memories of my sister's late teenage years and early twenties. She would drink quite a lot then throw up. My most vivid memory is when she came stumbing home drunk one night (thank god for the taxi driver who physically put her in the car, rummaged through her bag to find her mobile and called me to let me know he was bringing her home. I didn't even pay him and I have no idea what taxi company he was from but he was an angel!). She was so far gone she was hallucinating. She saw martians on the lounge room floor and the front door was talking to her. I was so scared. Mum and dad weren't home and I had no idea what to do.

Thankfully, she is now a mum to 3 kids and she has eased up a lot and only drinks occasionally now.

Anyway, the point is, my parents couldn't get anything through to her because in her words "they don't want me to have any fun". Yeah, must have been a thrill to puke your guts up every week. My parents made me research the effects of drinking on teenagers and young adults in all its glory in a bid to stop me doing the same thing. Some of the pictures I saw where so revolting. Now I very rarely drink and have never been drunk.

Maybe get him to research it on the internet (with you watching so he goes to the appropriate sites rather than those that glorify it) to really drum home the ramifications.

Good luck. I am sure it was as scary as hell!