Bastardization of "qp" or quarter-pound. Usually referring to marijuana but can apply to other drugs. Often said as "qb sneak" to veil the meaning to those not in the know.
qb by Cornelius Vanderbilt III July 27, 2005
"QB" An accronym for Queer Bait.
Short for Questionably Brokeback: Suspect. Metrosexual. All the familiar symptoms of being homosexual.