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Someone who isn't capable of doing anything but washing rocks, a useless and futile task.
Person 1: "Hey, have you seen Steve anywhere?"

Person 2: "well he's a rock washer, so I'm guessing he is being useless somewhere around here"
by Jeff Mcthiccy March 19, 2021
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May 12 Word of the Day
When someone goes to the gym and spends 90% of the time on their phones scrolling through social media
Looks like its thumb day again for Jimmy with his usual routing... 3 sets of 5 snapchat selfies and 10 sets of scrolling through facebook until exhaustion
by Gary br April 02, 2017
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