The acronymed version of blackout or get out. However, when bogoing, the drinker proclaims bogo status to proclaim that he or she is either blackout or attempting blackout. In fact, the get out part of bogo is irrelevant because one only proclaims the bogo when attempting blackout status.
First used by the infamous T-ROB in early 2009.
Thacher was so stoked the bar was serving him underage without an ID, he got his bogo on with buttery nipples.