what are words for

My little brother and I are talking up a storm now. Not that anyone else can understand us most of the time. Nevertheless, my all-time favorite word is still guck, or as Wyn says, dis, which may mean bus or something else entirely, even I'm not sure. Also, my brother is constantly holding up things and asking "Do?" This translates roughly to "Pardon me, but would you mind naming this object?" Subsequently Mom or Dad says dolphin, leaf, dirty laundry, or whatever. We're also learning the alphabet, which quite honestly is pretty easy. Every letter is pronounced "S," except "O" which is of course "O."