Have you ever really stopped and wondered—like on a scientific level—why excessive alcohol consumption can turn someone into the life of a party? Or a blubbering mess?

Before aunts and uncles across the country get inevitably tipsy tomorrow afternoon (or morning, no one's judging) ASAP Science breaks down the biology of how alcohol affects the neurotransmitters in the brain, resulting in slowed reactions, but greater clarity. It won't make dinner any less awkward tomorrow, but at least you'll have something intelligent to talk about. [YouTube]