I find it depends on the drink...
If its more than a couple of beers then I'll try anything and come up with some awe-inspiringly stupid solutions to problems (though not wrong per say....). Usually in the style of 'hold my beer'.
On whisk(e)y however, 2 and a half measures is great for bug hunting.
That said I'm glad I gave up smoking all those years ago. Always made the hangover so much worse.