used to say "that's enough" at what one is saying; something that makes someone lose his appetite

(verb) literally: 'to die from overeating'; to be too full from over-eating; (slang) to be disgusted / annoyed by someone; to be unable to stand one's attitude of conceit(as a result of their actions or words); to be turned off by something or someone; to lose one's appetite as a result of something or someone; an expression (in a dismissive tone) used to tell someone that you heard enough of what someone is saying, similar to saying : "don't flatter yourself" / "get over yourself" / "that's enough already"

not worried about acting as a fool (slang)