He delivered the speech in 'rhyme'. [=he used words that rhyme in the speech]
There seems to be 'no rhyme or reason' to/for some of the things he does.
He couldn't think of a 'rhyme' for “orange.”
(..) I need a super-embarrassing story about you. - Why? - It's just for my speech. And it's not essential, but if it could rhyme with "fellatio," that would be icing. No, Dina, most of the bridesmaids aren't giving toasts. - I'm not. - Well... (..)2017 TvShow: Superstore Title: Cheyenne's Wedding Season: 2 Episode 20