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Acronym similar to "brb" (be right back), but with emphasis on a bodily function performed during such hiatus. BRBGP standing for "Be Right Back, Gotta Poop"
John: Lets go get lunch
Mej: brbgp
Mej: ok, back...I feel like a new man. lets go get lunch
by Hot_Carl February 23, 2010
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