1. Separating sperm from a man's semen in order to promote fertility.

Used in some communities as an alternative for adoption when children are desired. Can be used to lower risks of child getting HIV.
Billy had a sperm washing so that his kid wouldn't get AIDs.
by Sujoy October 22, 2008
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In order to avoid swallowing the ejaculate after completion of a blow job, the individual will spit the ejaculate into his or her hand and continue stroking the penis.
My best friend the whore told me about sperm washing the helmet. What a great pro tip!
by turtle11666 June 22, 2020
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