the traffic caused by a group of African Americans blocking the hall and preventing Caucasian students from moving to their next class.
Tom: Dude, why arent we moving?????
Andrew: Man this is the Math hall. This is probably the black-up from all those black guys who walk slowly.
Andrew: Man this is the Math hall. This is probably the black-up from all those black guys who walk slowly.
by FlockaFlocka12 February 03, 2011
An act of aggression that occurs "when fools need a beating, and you call your homies, and put in some work."
by Rihanna had it coming January 24, 2011
by AzraelNarianErnee September 19, 2013
A black up plan can only be observed.
"What the hell, you're 2 weeks pregnant?!? Where's my boxing gloves."
"What the hell, you're 2 weeks pregnant?!? Where's my boxing gloves."
by bpiau2728 February 04, 2012
The so-called art of repairing something in a half-arsed manor, much like black people do because they are so lazy.
Dude: you totally fixed my TV!
Dude 2: no I just blacked it up by using a wire coat hanger as an aerial.
Dude 2: no I just blacked it up by using a wire coat hanger as an aerial.
by fredreckless January 12, 2010
A phrase used to show support for a African American. Generally this phrase is used to show support of a black person largely based upon his or her race, but not always. This phrase is often used to show support of the first black president of the United States, Barack Obama, and his policy of "Change."
by barnaclebill3482 January 12, 2011