Nashville's Comedy Walking Tour with Grandpa Bubba. Folks get ready cause this ain't your Grandma's Tour!! You'll see and learn everything you've wanted to know about the REAL Nashville as narrated by a truly hilarious southern gentleman, "Grandpa Bubba". An certified Ambassador to the city, your long lost southern Grandpa will show an experience you won't soon forget. Book and Save 15%! Nashville's Comedy Walking Tour with Grandpa Bubba.