Remember the much loved Looney Tunes character, Tweety? “I twat I taw a puddy tat!” was his or her catch phrase and was full of speech errors (a recurring theme in many Looney Tunes characters). A little birdie once asked me…. “When does it stop being all b’s and d’s?” She was referring to her then two and half year old son’s speech and his speech pattern reminded me of Tweety. So is this normal?