why do i stutter somuch even though i dont have astutter

why do i stutter somuch even though i dont have astutter im. alwyas tripping over my woords and whenever i talk its just kindof like “hey i like.uhhhh li.like tom.tomatoes annndn fuckmmy fucking chchungkpus life” and ut always freakign happens i cant get my words out because im always buffeering like a stupid robot. dontw tell me its stress or anxiety because i know its not.i can be as relaxed as ever and i still wont be able to get a proper sentence out. sometimes i can spewk jormally (even under hogh stress situations sometimes( so idk what causes this. its nor like i speak too fast i dont think. is it a stutter forreal or is my brain just being naan asshole