The act of doing/snorting cocaine. A clever way to hide it from a large crowd but also keep humor high.
Hey you guys, wanna go wash your dog?”

Hey Chris where have you been?” “Sorry I was in the bathroom, I had to wash my dog
by P.L.S February 1, 2019
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"What are you going to do tonight?"
"Uh, you know... I'm gonna go Wash the Dog."
by DrDirtea February 20, 2016
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What you do when there has been a family row and you slip away.
My sister and husband were having a rough time so I slipped away to wash the dog.
by Mad Dan (Leicester) March 21, 2020
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