This completely random thing is an insane polish pick-up line, where you throw a chestnut at the person you like and then ask them if it's theirs (dw, i also have no idea how this came into being) (that's literally it) (there's no pun to it, no smart word play) (just. a chestnut.)
sskk where atsushi wears aku's jacket a lot and gets so confused why everyone seems to be so scared of him when he's just wearing his silly bf's silly jacket