wash one's brain out with soap
English
editEtymology
editFrom the idea of washing one's mouth out.
Verb
editwash one's brain out with soap (third-person singular simple present washes one's brain out with soap, present participle washing one's brain out with soap, simple past and past participle washed one's brain out with soap)
- (colloquial, humorous) To remove or erase unwanted images from one's mind.