Originally Posted by Bane of your existence

No.
At least, the answer isn't quite so black and white.
Does alcohol decrease inhibitions? Sure. Does that mean we sometimes think or do things that we normally wouldn't when we're drunk? Yes.
But we don't just think and do the things we "really" want to when we're drunk. In other words, being drunk changes your personality as well. So, the things we're often uninhibited in doing while we're drunk are often things we wouldn't even find fun or cool sober.
It seems like the "real" us when we tell someone off that we've secretly hated for a while. But it's not the "real" us when we say we love strangers or make any of the plethora of bad decisions I know I've made drunk.
Does being drunk expose someone for who they really are? Not really, it just shows what they act like when they're drunk.