A nut covered in a super spiky porcupine-ish protection shell that will give you a million splinters if you fall on one in your yard. The nut itself is evidently so damn tasty it inspired a Christmas song that has been covered by everyone and their brother.
when a man turns into a woman and gets a boob job, they are called "chest nuts" in some parts of the world.
"Remember when Carla was Carl before he/she had the chest nuts installed?"
"How could I forget?"
"Chest NUTS ROASTING ON AN OPEN FI-AHHHH!!! JACK FROST NIPPING AT MY DOOR!!!!!!!!"
"I like tuwtles"