I delivered a speech saying, "The world is so dirty, who is qualified to say sadness". Someone commented: What do you mean by "very rhyming"?

Rhyme, or rhyming, refers to the use of words with the same or similar vowels in the last word of some sentences when creating rhymes, so as to produce a sonorous sense of harmony when reading or singing.

It gives me the feeling that the commentator didn't comment on your sentence, but only said it rhymes, which means that he is just teasing and is not interested in why you say so.