Used as a response to an obscene statement, this phrase recalls unpleasant childhood memories wherein mothers would "wash out" a child's mouth with soap as a punishment for using curse words or crude language.
Cristobal: Dude, Jenna was being a total bitch last night. She broke my goddamn Death Star model. That shit was fucking to scale too.

Geraldo: Hey man, I don't care. Wash your mouth.
by Aaron Michael December 10, 2007
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to do anything and everything humanely possible to make someone with whom you interact on a daily basis stop swearing.
mother : Daniel, I literally need to wash your mouth with lemon juice, now. Your teacher just called me to say you have a vocabulary problem,

son : why should I stop swearing? Make me.
by Sexydimma April 4, 2013
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to do anything and everything humanely possible to make someone with whom you interact on a daily basis stop swearing.
mother : Daniel, I literally need to wash your mouth with lemon juice, now; you have a vocabulary problem

son : why should I stop swearing? Make me.
by Sexydimma November 1, 2014
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to do anything and everything humanely possible to make someone you care about stop swearing.
(N.B: when i was in elementary school this is the type of punishment our teachers threatened us with if we didn't stop swearing)

mother : Daniel, I will soon resort to having to wash your mouth with soap and lemon juice; you have a vocabulary problem

son : why should I stop swearing? Make me.
by Sexydimma February 3, 2015
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mother : Daniel, wash your mouth with lemon juice now. Your teacher just called me to say you have a vocabulary problem,

son : why should I stop swearing? Make me.
by Sexydimma February 4, 2013
Get the wash your mouth with lemon juice mug.