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Mléko is when someone is totally out of his mind, doing loco things. It's a scenario when a person cannot think straight, often because of alcohol and/or drugs but it can also occur in a sober state. The person does strange things he never expected to do, which result is great video footage.

The word is used in the Netherlands, but it's originated from Eastern Europe. Mléko is Czech for 'Milk'. In Polish it's Mleko and in Croatia it's called Mleijko.
"Man, he's is mléko"

"We are going mléko tonight"

"This cab driver drives like a complete idiot! He sure is fucking mléko!"
mléko by Zuennas July 8, 2014
Related Words
mlekorion mlek mlekc Mleker Mleki mléko
A cool person that likes anime and osu, they also like yaoi
Hey mlekorion’s online!

Yay!
mlekorion by Irlfndjfjbdvks September 5, 2019
a person whoose immune system does not allow them to consume enough alcohol and they often puke after a few drinks. They tend to go to sleep after they puke.
mlekc by mlekc March 8, 2022
a cool person that likes anime and plays osu a lot they also like yaoi
Hey mlekorion's online!

Yay!
mlekorion by Irlfndjfjbdvks September 5, 2019
Mleki is a super cex king that never loses a 1v1
Girl1: OMG Mleki won again

Girl2: WOW Mleki marry mee
Mleki by TotatlyNotMelk January 16, 2023
Mleker is that kinky, romantic guy whos often bisexual and loves everyone, but is not that easy to accept other people into his life and he can have a pretty smal penis. The name is pretty rare but most common in sweden
Person 1: Oh that mleker guy is so hot
Person 2: oh yeah.
Mleker by Dustycat June 29, 2018