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1.
A mix of Paregoric (A camphorated tincture of opium) & Pyribenzamine (an antihistimine) which is strained & then mainlined. Gained popularity in Great Britian during the early 1960's.
If you can get your hands on some real Blue Velvet then you've got a time machine.
by Mad Baloney October 27, 2005
 
2.
Opium. The stuff that you smoke and is addictive and makes u go woah crazay. It also cures dissentary.
Smoke a ton o' blue velvet got none no more di a rear.
by DJ Staplez June 10, 2004