It's certainly up there and when it comes to the south of the country, it's the most powerful insult you can throw in a person's direction.
How does one exactly define a 'Langer?'
Well according to the famous Tim O' Riordan song, it can be defined as a "young lout, roaring and falling and spilling his stout, in everyone's business, you'd foresee his snout, down in Cork, he'd be known as a langer," as well as multiple other descriptions which can be found below.
You could also use it in a "I'm absolutely langered" sort of way, meaning you've had one too many pints and you're already regretting the hangover that's on its way.
In America, if you roared out the word, 'langers', to a group of people, they'd probably think you were just really thirsty...
Reddit user, Casmoose came across this little gem while they were shopping stateside.