Foobutt Share definition Flag The term referring to the act of ones self that portrays infamous "nathan severs" or otherwise known as "big daddy nathan" in a way that only can be explained by the term Foobutt. "Dude, your as fat as nathan severs, you foobutt." Foobutt by Foobutt July 24, 2023 0 0 Get merch Get the Foobutt mug. Buy Now — $32.95 See more merch