Birds. They're interesting creatures. First of all, they regurgitate in each others mouths. So when a bird gets wasted, they don't look for a trash can. Instead, they look for their friend's mouth. Second, they must have classes at 3 in the morning, because I always hear them up and about at 2 am. Roosters are the birds that always get drunk and hungover; the earliest they ever get up is sunrise, and then they yell their asses off because the morning light hurts their hangover-headache.