Wooster Washboard 

It's when a girl (or a guy) is riding you with her front facing you and you start poopin in your hands secretly. Then you take the poop and you rub it up and down the girl's back like a washboard.

John drew a smiley face after giving Jeff a Wooster Washboard.

Wooster Washboard by Kirk Johnson September 7, 2006

Wooster Washboard 

Actually, it is not necessary to "snot rocket" down the washboardee's throat, but rather they may clean out the washboarder's nostrils with their tongue. This alternate strategy is also deemed a washboard.

Dude, I can totally breathe better now that Erika gave me that Wooster Washboard.

Wooster Washboard by DeQwan Jackson September 7, 2006