A very poor or crude way of installing something or putting something together. The word is typically refering to a system, or car stereo application.
"Ayo i heard you got a fattie system dog."
"Ye-uh but i havent put that shit in yet."
"Yo i can hook that shit up."
"nah man im gonna take it to best buy, i dont wanna get that shit nigga rigged, ya heard?"