One who, upon wiping their arse, then proceeds to sniff the soiled toilet paper to discern the odor/nature of what they have produced.
"That girl Marie is a goddamn poo sniffer. She admitted it when she was drunk the other night. Gross."
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A gay(homosexual)male. A man that likes cock and balls in his face.
Juan told Julio hat his ass hurt. He had no idea he was a poo sniffer. Getting paid cash under the table and getting welfare was cool, especially since he doesn't pay any taxes and is actually more racist than the gringos.
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the deffinition of a poo-sniffer is someone named romyn
dang your such a poo-sniffer