When a guy asks for a full of your Gatorade and then you run into him later and he offers you and 4 of your closest friends a free hand wash on the street.

The process of sticking one hand in a woman's butt and the other in the vagina then do a hand washing motion.

a term referring to manual copulation of a female, aka finger-banging or heavy petting, sometimes used in the possessive tense

A simple reminder to all the lazy people who haven't washed their hands in a long time.

Washing hands means to smoke, usually used among underaged smokers so that they aren’t suspected of smoking

Old people having sex