My favourite Irish insult is “Go ndéana an diabhal dréimire de chnámh do dhroma ag piocadh úll i ngairdín Ifrinn!”
Translation?
I hope the devil uses your backbone as a ladder to pick apple’s in the garden of hell
Holy shit Ireland are you ok
There’s also one that directly translates to :
May your friends have a fine day – burying you
That’s metal as fuck