Chicago hip-hop icon Twista is well-known for his tongue-twisting, rapid-fire rhymes, so Genius put his fast rapping expertise to use for the latest episode of 'The Cosign.'

Twista, who was named in the 1992 Guinness Book of World Records for rapping 11.2 syllables per second, gave his take on some of the new generation’s fast flows. From Ski Mask the Slump God’s verse on “Flo Rida” to JID’s “Off Deez” to Quadeca’s “Uh Huh!,” Twista shared his honest opinion on each new fast rapper.