1, literal meaning : I get drunk 2,Implied meaning (metaphor): helpless，unhappy, speechless , this words is very humor also can say: 我晕了 / 无语了 / 无力吐槽

Buzzword.It means that things are not going well or that I am a little confused.

Used when you are dumbfounded by someone's stupidity. Say 我也是醉了, or simply 醉了。我醉了 is less common for this meaning. The phrase got popular around 2014.

It's self-mockery, express that you seem to get drunk cause of doing some stupid thing.

我也是醉了 我醉了 Used when being surprised by people's stupid behavior 我（也是）醉了，你怎么把钥匙忘在家里了!?