BCO. 

lol my grand pa said before Columbus wtf is he talking about like before christ before Columbus bco new term. So any date prior to August 3, 1492 – November 7, 1504. Is BCO.

BCO. March or April – 1490 Ch'ing-yang event, a presumed meteor shower or air burst over Qingyang in Ming dynasty China, said to have caused casualties. July 13 – John of Kastav finishes a cycle of frescoes in the Holy Trinity Church, Hrastovlje (modern-day southwestern Slovenia). These events happen BCO

BCO. by .BCO October 10, 2021

bco 

Elitism, secrecy, and tradition.

Fuck, is bco down again?

bco by xoxo February 11, 2005

BCO 

Black Cock Only

"Fuck, that girl is hot"
"Sorry white boy, can't you tell? She's BCO."

BCO by teen23 December 30, 2009

bco 

be coo outside

nigga bco

bco by UnknownSki July 4, 2023