I think it’s both. It lowers your inhibitions and lets you do things that you wouldn’t otherwise do: dance on a table, go home with a stranger, call up an ex, etc. But, it also breaks the inhibitions on the various random thoughts people have that aren’t “hidden desires” but are just intrusive thoughts.

For example, “I didn’t want to sleep in a wheelbarrow”, sure. But, you did want to lie down. And, the wheelbarrow was right there. Once you were in the wheelbarrow, you didn’t want to sleep there all night, but you did want to relax for a bit.

So, it’s not like “I want this outcome”. It’s more like there were a lot of small steps between here and there, and a rational brain would have put a stop to things along the way, but a drunk brain doesn’t second guess a lot of those small decisions which result in one big outcome like sleeping in a wheelbarrow.