Overall, alcohol does cause some people to be more open when drunk, but that doesn't necessarily mean what they talk about is true. The reason for these uninhibited utterances is the way alcohol affects the brain.

Do true feelings come out when drunk?

"There's usually some version of one's true feelings that come out when one is drunk," Vranich said. "People dredge up feelings and sentiments from somewhere deep in their brains, so what one says or does certainly reflects what's going on deep down.

Is being drunk an excuse for flirting?

A lot of people believe that drinking isn't an excuse for out-of-character behaviour. They say the truth comes out when you're drunk, but research actually shows that isn't true.