Definitions by The Goatress

acid rain 

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).

Man, that Acid Rain last night was amazing, but now i have a bad case of hydrochloric penis

acid rain by The Goatress November 21, 2010