1 definition by RobKnowledge

speedballing

The mixing of cocaine and heroin/morphine simultaneously. May also refer to mixing of stimualates such as amphetamines with other opiates or benzodiazapines. The mixing of stimulant and depressant is intended to "confuse" the heart and/or respiratory system.

Yo that stupid f*cker was speedballing all night. Dumb sonofabitch.

by RobKnowledge April 16, 2008