To hurriedly wash yourself, usually in one area of your body, in a sink in a way that you'd usually do in a shower or bath.

You could shampoo your hair, wash your feet, or anything in between.

It's often, but not always, done secretly in desperation: there's no time to shower or bathe, or you don't have access to a shower or bath, like at work.
"Oh, man, you're just too funky. Sink wash your junk and come and fuck me."

"You having a bad hair or what? You're gonna have to sink wash your hair before the meeting."
by fredb March 4, 2009
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the act of washing your genitals in the sink before having relations with a special friend.

the act professinal persons aka ladys of the night will ask you to perform pre coutus
guy 1: my girlfriend made me have a cheeky sink wash before we got started.

guy 2: standard mate. id make you have one to
by Jake R M Stone January 23, 2012
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