My favourite Irish expression, used to describe someone who’s always engaging in one-upmanship, is “if you’ve been to Tenerife, he’s been to Elevenerife.”
My second favourite Irish expression, and one of the most crushing burns you'll ever hear, is “he looks like his mammy knitted him.”
There’s a Swedish expression for describing someone that has obviously lost a fight and taken a lot of damage: “His face looks like a plastic bag full of ice skates.”
A Korean expression for an unattractive person is 옥상에서 떨어진 메주. It essentially means “their face looks like a fermented soy-bean brick that fell off the roof”
3 of my favourites from my parents: Never pack a gobshite- you can always find one when you get there; it’s hard to tell if he’s fast asleep or slow awake; and, that fucker wouldn’t lift a coal off your foot.
Three of my favourite expressions for someone who's very idle: "he's as lazy as the piper’s pinkie"; "if there was work in the bed, he’d sleep on the floor"; and "he thinks manual labour is a Spanish musician"
A similar one for someone who’s not particularly bright is “there’s two idiots in the village, and he’s both of them.”
But the most colourful one I've ever heard is this one: “they were first in the queue for brains, but ended up holding the door for everyone.”
My all time favourite, which must be muttered darkly at the departing back of the person inquestion (most memorably by a family friend in reference to her cousin, the darling only son):
"If he was a bar of chocolate he'd eat himself"
Heard in South Wales to describe someone who always comes up lucky whatever the circumstances. “He’s a hand-down-the-toilet up-with-a-Mars-bar sort of person”. No idea if it was just this one man saying it or if it is more of a general expression. But it’s perfect
That's fantastic, especially said with a proper S Wales accent. I think there's a pretty distinct local way of phrasing stuff, heard a lot of excellent descriptions when I lived there.
My favourite French version is "he thinks he’s the Pope’s head mustard-maker."
My favourite from isiZulu is "he enjoys being looked at like a long-haired goat."
And there's an old Dutch expression about people who are always boasting about their children... "everyone thinks their owl is a falcon."