A stem (section of GLASS TUBE containing a small wad of metal scouring pad) which is CRACKED and SPLINTERED from a crack (cocaine) smoker applying too much heat for too long while trying to suck a hit and a half out of a hit of crack.
This abused makeshift pipe, belonging in the trash, is rather kept in one's pocket wrapped in tissue paper. Often seen on the TV show COPS; as one posessing such gets a trip to jail, everytime.
"Put that NIGGERPIPE away you fuckin' junkie. Y'want me to cut my lip? How long you been runnin' anyhow? You look like shit." "Hey, didn't I see you on COPS last season?"
"Yo, I rolled this dude for an eight-ball of crack! Break out the NIGGERPIPE!"
A piece of shit muffler that people put on their shitty cars to make them sound badass. It gets the term "niggerpipe" because a lot of black people tend to have them.
That Honda Civic has a niggerpipe on it, hear it make that shitty noise?