The act of shifting a motor vehicle into reverse gear while on a highway in order to back up and to get onto an exit ramp one has already passed. This term comes from the New York Metro area, where Asians and Caucasians have conducted a nonscientific study by looking to see what the person taking this action looked like only to find that they are black at least 90% of the time.
"Look at this fucking guy blacking up on the highway..."
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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.
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Getting beat up, or jumped, by a group of niggers.
After Joe made a racist joke at KFC, he soon drew a crowd and was blacked up on the spot. His friends claimed they never knew Joe in order to avoid being blacked up.
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An act of aggression that occurs "when fools need a beating, and you call your homies, and put in some work."
If you don't get yo' hands off my bitch, I'm callin' for black-up.
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A Secondary plan that is either very sketchy or requires questionable methods
"oh hey dude how are you gonna do that"-Person 1
"im switching to my Black-up Plan"-Person 2
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A black up plan can only be observed.
"What the hell, you're 2 weeks pregnant?!? Where's my boxing gloves."
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To fix something quickly and inexpensively and not to the best possible degree.
Sorry man, I only did a Black Guy Fix-up.
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