OK, in all fairness I cribbed this from the WSJ blog, but I think it's a wonderful story we can all relate too:

More Drinks May Lead To Severe Barroom Brawls

Drinking does not necessarily lead to barroom brawling, but the amount of alcohol consumed by participants in an aggressive situation can make a difference in how severe or injurious the brawl turns out to be, according to new research.

A study by Kenneth E. Leonard, Ph.D., of the State University of New York at Buffalo and colleagues suggests that other environmental factors, including dim lighting, large crowds, high noise level and encouragement from onlookers, are also strongly associated with the severity of barroom aggression.

"Men who reported higher levels of [alcohol] consumption were more likely to report high levels of aggression and that their opponent was hurt or injured more than were men who reported lower levels of consumption," Leonard says.