"I hate flying, flat out hate its guts"

The quote by William Shatner expresses a strong dislike for flying. He is conveying his extreme hostility to the activity, and his sentiment is clear. He is not merely expressing a mild dislike, but rather an ingrained hatred. He is so passionate about his feelings that he goes as far as to state he dislikes flying "flat out" and "its guts". This is a strong declaration that conveys the intensity of his emotions. It is most likely that he has had a negative experience with flying in the past, or possibly he is just scared of the activity. Whatever the factor, it is clear that William Shatner has a strong aversion to flying.