by Joe Schaefer August 06, 2005

To fail a drug test or piss test. Drug tests are usually given by either a probation officer or a parent/guardian. The test requires for you to urinate in some sort of container, while afterwards your urine is tested for illegal substances. If you test positive for any illegal substances, you just dropped dirty.
by Miss Kristin July 17, 2006

by charlie muphy August 23, 2009

by bayrhino January 24, 2010

Don't bother taking a shower before The Dirty Drop plays, you're just going to be filthy afterwards anyways...
by the ketchup August 02, 2008

by Anonymous May 15, 2004

Serial position in which a penis-haver lies recumbent and holds his erect membrum virilis pointing upwards. The partner, having eaten a vindaloo the precious night, squats about the erect "gherkin" and drops the drty bomb.
by ORANGEHAMSTER ALAN ORLA May 17, 2023
