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1.
Please Rate Some Other Member

Commonly used on TSR (the student room) when you want to rep (give reputation points) to someone but the server rejects your request as you are not allowed to rep the same person twice in too short a period. You therfore write PRSOM to let the person know that you want to rep them but are unable to do so (the server says: please rate some other member before giving reputation to this member).
Bill: Yay! I got a first!
Tony: Woot Woot! PRSOM
by Spyro Gyro July 05, 2011