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Phrase derived from the traveling game Rock or Potato (where upon seeing an object of questionable nature one member of the group asks Rock or Potato and each member of the group must declare Rock or Potato before approaching the object). This phrase is used to indicate the positive or negative nature of a statement.
"Oh man Jessica, I hooked up with this guy last night..."

"OOOOooh! Rock or Potato? "
"Rock ;)"
"Yeah gurl!"
by Cummingtonite December 08, 2010
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