Ahh, I hate telling my favorite word because when I say one then a lot more come to my mind, lol.
Whatever, this may be my favorite word: RANDOM. lol I use it in English in my language as well (Spanish). LOL Although it means something like "fortiuitous", it has a really special meaning for me, lol.
Okay, I had only to tell one word and I had just told my life... Please put "RANDOM. LOL" with the LOL inclusive. xD