There are so many, and depending where you play. I was always nicknamed the Deuce guy because I referred to Pocket 2s as Pocket Deuces, and the people around here had never heard of them, They called them Ducks.
AA Rockets or Arrows
KK was always known as Ace magnets or Butchers
But I am sure that other countries have their favorite names for all sorts of
hands.
My favorite name is for 10,2 is Dollies or Dolly Brunson as he won I think 3 world series with 10,2
I watched one on YouTube and having a massive chip lead heads-up he called an all-in bet from the other player with 10,2.
The other guy showed AK and said "I am beating you"
"Only for now" he smiled back as if he knew what was coming and sure enough the flop and turn bricked and Doyle Paired his 2 on the river winning him the world series.
I have many times called an all-in bet from another player without even looking at my hold cards if I have him out chipped, only because if I looked at them I would probably fold.