Another from the "You just can't make this shit up" files
Having a couple beers makes men smarter. Well, more able to solve brain teasers. Also more likely to say "I love you man, blearrrrgh."
(Yes, I'm overestimating the intoxication effect of a couple of beers. I don't drink. At all. Deal with it.)
(Yes, I'm overestimating the intoxication effect of a couple of beers. I don't drink. At all. Deal with it.)

no subject
It's the same way with some drugs, and I've experienced it myself. If you get just the right amount of intoxication in you, doing things that require concentration are much easier because the rest of the voices are put to sleep.
Then you go and have too much and end up writing The Hangover part II.