Young Thug talking sounds nothing like Young Thug rapping.
Young Thug has developed and refined his own language, based primarily on an alphabet of whinnies, neighs, and other animal sounds. Most of the time, shit is actually pretty fire.
In a new shoot with GQ, Young Thug reads aloud the lyrics to "Best Friend," his hit record off of Slime Season 1. Thugger is all about flow, and to hear him read these insane lyrics rather than rap them makes them lose their luster. High comedy.