What are your favorite and least favorite words? Any reasons why?

I liked this question, so I thought I'd answer it.
My favorite word is laughter. It just sounds wonderful and it is wonderful. Laughter. Also, I love to laugh so much.
My least favorite word, it would have to be Prude. Not really the meaning of the word, but saying prude. I don't think I have a real reason for it. It's just not a good word. Pruuuude. It sounds funny.