Rock the mainline

To get "high" on heroine through the means of an introvenus-needle. I.e. - Shooting up.

Addict: Yo, dog... Yo got the shit to lemme rock tha mainline?
Dealer: Fo' sizzle ma nizzle, that'll be fiddy.

by God May 20, 2003

Mainlining Murder

A killing in which drugs are shot into the veins. Used in the song by Lars Frederiksen and the Bastards

I said a mainlining murder baby (part of the lyrics)

by Mardy blackardy October 18, 2010

mainlining

pursuing (somone, something) with an intensity that keeps you up from Page Zero to Page Zero

Jasper and Kelsey stayed up all night mainlining after a good acronym for the pres search

by thresky October 21, 2022