...I was just thinkin about this too. I think a lot of the simple one and two syllable words such as "trip", "flip", "money", "funny", etc... are often rhymed in the same way. (by the likes of Snoop Dogg, Nelly, etc). I think it gets more complex when you consider multi-syllable rhymes that include more than just one word... listen to Nas, Crooked I, Eminem, Yukmouth...