disappear, vanish, quickly remove oneself from a situation. for example, "I saw the drug squad coming so I forped."
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Comment: forp comes from a typo by Karla Ptacek during Avatar Body Collision rehearsals in UpStage, when she meant to type "drop and clear" - the strategy for removing an avatar that has become stuck onstage. It has become part of the lingo of the group.