Talking to myself....

does any one else have that problem where they just talk to themselves randomly? cuz i do... and its not in normal places either... for instance, i was talking to my little sister and in the middle of a sentence i said something to myself and then said something to her again. she was so confused... is that normal? talking to yourself? and not like mental notes but like whole conversations... i dont think that is normal. but then again this is kind of like talking to myself and TONS of people do that. so there that makes it normal. yay me!