wash out one's mouth

wash out one's mouth (third-person singular simple present washes out one's mouth, present participle washing out one's mouth, simple past and past participle washed out one's mouth)

1. Alternative form of wash one's mouth out
   • 1996 November 29, “mouth soaping questions”, in misc.kids‎ (Usenet):

     My 10 year old son mouths off a lot to me lately. Friends have suggested that I wash out his mouth with soap. [...] I will *not* tolerate foul language, though. I recall washing out my son's mouth with soap less than a half dozen times between ages 8 and 11, He absolutely positively hated it, and so did I.