It means when your being boring or acting really really stupid
1-bruh yur so bo
2-???
1-bruh yur so boring..
3-nigga yu sound so fuckin bo rn
4- bruh waa??
3-yu sound stupid asf, take yur square ass on
"Bo" is short for "boyfriend" Its an undercover word used to cover up your in a gay relationship!
Hey Bo ! Wanna hit the showers together after gym class today?
Bo is so fucking amazing they deserve the world and also they have a massive fucking crush on Sam. Don't tell anybody though!!!
Bo is so hot
A reduction of the words Bro and Boo to create a non-gender specific call out to a close friend.
"What up Bo!" Rather than "Hey bro / boo!"