"Mary Jane" is a popular song by the Spanish funk-rock band , featured on their self-titled debut album released in 1999. The track is widely recognized for its high-energy fusion of funk and rock, a signature style the band calls "funky andaluz embrutessío". Song Meaning and Context

While the term "Mary Jane" is a classic footwear style, in the context of O'Funk'illo's lyrics, it serves as a common slang term for .

: The song features lyrics in Spanish that describe a deep, almost obsessive relationship with "Mary Jane," referring to it as the "smoke of my chimney" and a source of "absolute peace". It expresses a plea against the illegalization of their "way of life".