I just realized what happened Saturday night. It was the Svedka.
Someone told me about this great new vodka, distilled five times and super smooth. What do I know about vodka, but amazingly enough it was also one of the cheapest vodkas in the liquor store. The Cosmopolitan martini I was making was 2 parts vodka to one part mixers, including triple sec which is not non-alcoholic. Super smooth = super potent. I might as well have injected the stuff.