the act of vomiting into a girl's vagina before having sex with her. doing Acid Rain usually results in Hydrochloric Penis (burns on the penis from Hydrochloric acid, or better known as stomach acid).
by The Goatress November 21, 2010

by poochikins March 18, 2011

by The Rising Pylon December 27, 2007

the act of expelling gas (farting), then urinating on them. Similar to real acid rain caused by rain passing through hazardous pollutants in the air (smog)
by akhkhazu February 21, 2009

dang, i wen ova tha german gurls house , she wuz lyke 'me wan acid rain' then she took a dump. i wuz all confused biatch
by SpRoOf September 05, 2008

by T-P-L July 03, 2009

John: "Did you hear what happened to that kid down the street?"
Paul: "Nah, What happened, John?"
John: "He got acid rained on by some roadman"
Paul: "Nah, What happened, John?"
John: "He got acid rained on by some roadman"
by PebbleEscobar69 December 26, 2018
