@Dailydazzie Ah. In that case, it means that a person isn't willing to do something that's as immoral or unethical as whatever is being talked about. At least in English (I know it might vary for other languages), morality is often referred to in terms related to height (e.g. "take the high ground" meaning to take a morally superior stance, or "stoop to someone's level" meaning to do things in line with an opponent's lower moral standards.) Also, when something like this is said, the speaker might choose to emphasize "that" (e.g. "I don't go *that* low.") When they do so, they're acknowledging that they do have relatively low standards, but still feel that whatever is in question is too immoral or unethical to do.