boyo is a word to describe a furry pal. You usually have to say Heyo instead of hi or hello to greet your friend or you will look like a weird guy who took boyo from a furry. Waddup is also another way too.
Boyo is the litteral term of saying "bro"or " dude" , the word boyo can litterally mean anything at any given situation, the word is revolutionary and nation wide