Mex says that colitas is Spanish for "butt" or "tail". Spanish slang for marijuana buds is translated as "foxtails". Colitas is a plural diminutive form, meaning the smell of buds. Colitas was first brought to my attention because of its mention in the Eagles' song, Hotel California.

Colitas is also mentioned in a White House release on drug information.

Thank you Don Henley for one more drug reference in modern music.

http://www.whitehousedrugpolicy.gov/publications/drugfact/pulsechk/midyear2000/marijuana.html