Referring to the teacher in the Disney show Boy Meets World, which was Chuck Nasty’s favorite TV Show as a kid.
Also a reference to a line he said on another song called “One Day” on a group mixtape by “The Solo Cupz” in which he said:
“I rock khakis with my cardigan, just call me Mr. Feeny,
Yeah I only on a Honda, but I push it like a Ghini”