My twin brother is a bit of a party animal and is forever attending all these parties. I don't have a problem with that but my parents always expect me to go with him to keep an eye on him; as he is prone to get drunk. This annoys me, because every time I have to end up half carrying-walking him home as I can't always find a mode of transport. It's not that I don't enjoy parties, but I wish he didn't get drunk in the first place. Just lately we went to our prom and his friends were winding him up big time; and it's always me who has to step in, stick up for him and get him home. And he always has a major hangover and gets really grouchy with me nearly every week. Both my parents are pretty laid back on the drinking - partying thing. Any advice or help would be much appreciated. :)