Nerve go drunk off them, but we used to buy a six pack just for the next morning. Good for two things...
1) A hangover is your body wanting more alcohol and we've all heard that drinking a beer in the morning is a good cure. But, most people can't even think about drinking another beer after getting shit faced off Bud Light all night. Get yourself an Ice and your all set.
2) If you and your bros are looking to start drinking right when you get up but got drunk the night before, it's a good way to ease into it.
If you don't want to buy them, have each person steal one from a chick at the party and hide it. The next morning you and your bros will be sipping stolen Ices and feeling great.