My favourite word lately is humuhumunukunukuapua'a. As far as emotional responses, this one always gets a smile from others (of course it makes
me smile, else it wouldn't be my favourite!

)... either the word itself or by watching me try to say it.
Okay, Shade, now I have to chime in. I can verify the reactions you've posted!
Every now and then, I meet someone who has learned this word. Being that I'm part Hawaiian, they would try to impress me by trying to pronounce it. And it is a funny word to pronounce.
They tend to smile and laugh a lot because it sounds funny to them. It's fun to watch and listen to.
It makes me laugh, but I don't mock them. I don't embarrass them either but try tell them that it'd be easier, though less fun, to say "fish with a pig-like snout"- which is what that word means.
This, however, sometimes invokes another burst of laughter.
Incidentally, so far, I've only met one person who wasn't from The Islands who could actually pronounce this word fluently. But, she too, smiles whenever she says it.
I'm still fond of The Tick's battle-cry, "Spoon!"
Sometimes I'll randomly blurt it out during a conversation just to mess with the other person. Most people laugh and shake their heads. Those who know, say it back.