"Bye, __": farewell from a buffalo's dad, in a classic joke (3)

I believe the answer is:

son

(Other definitions for son that I've seen before include "Male descendant" , "Young boy" , "Male offspring" , "Human offspring" , "The kind of child" .)

I've seen this clue in the LA Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.