I get it. There are other ways of describing the situation. However, none of those are synonyms for what he actually said. There's no phrase that means "obsequiously please and debase ourselves for". (And it's kind of funny, since in real life, even this phrase ("deep-throat") has very little of that connotation.) "Prostrate oneself before" is the only phrase I can think of, and who is going to say that?
He expressed himself more thoroughly than with the phrases you cited. He telegraphed disgust, superiority, and a bunch of other emotions in one phrase. There's an argument to be made that he shouldn't have, but you can't deny he was extremely expressive, in a way that just can't be done with a more polite word.