Ice Cold Rhymes

Alright, listen up, buttercup. See, rappers rap. When they do good rap they "drop rhymes". Now, "ice cold" means really good, but it ALSO means actually cold, like ice. So the joke is that rappers drop good rhymes, but the phrase sounds like they're dropping ice, which would keep them cool in the summer. You probably think it's cool to like the Jonas Brothers. It is not.