The song Hotel California by The Eagles starts with:
On a dark desert highway, cool wind in my hair
Warm smell of colitas, rising up through the air
As a Spanish native speaker from Spain, I cannot understand what colitas means in this context. To me, this word means "little tail", as in, when a person with long hair wears it in a pony tail.
Also, in countries like Argentina, I know that cola also means "ass".
However, this song is most probably influenced by Mexican Spanish, so I went and looked for slang meanings of the word. AsíHablamos reveals tons of results and, for example, it says that in Mexico it can mean either "pussy" (vagina, slang) or "soda":
Vagina, dicho en clases bajas y medias bajas
Bebida gaseosa, pegamento
Still, a "warm smell of colitas" wouldn't match any of these words (well... no, no).
So, assuming this is a Mexican Spanish word, what is its meaning? Is it still being used in the slang context?