they might just be in the moment and want to share what they are feeling regardless is anyone reads it or not (like saying yes when finally beating a game eventhough noone is in the room) (granted some might definitely be showing of and wanting the attention, but for others it might be a true expression of their surprise or happyness about it)
I fell for it too. But atleast as annoying was all sorts of things that werent countries came to mind (and country starting with j in my language). Jemen, Jerusalem jutland, jericho, java, jakarta. Maybe even Jehovah... not sure but it came up now rememering the ones that came to mind doing the quiz..
now more things come, make it stop.. juniper, jupiter, juno..