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1.
Sarcastic questioning of a situation, or event. Disbelief of terms of a comment received, or given.
Similar to "OMG" or "Oh My God", used in the format "For Pete Sakes"

"Did you hear that Dan lost $1,000 at a casino last night?"... "For Pete Sakes, are you kidding me?"...
by slugger_mn March 17, 2011