The act of sniffing bodily fluid stains left on one's couch, bed sheets, etc. following a night of drunken fornication or intercourse. The sniffer, often a male, believes the stain originates from alcohol, but much to his dismay, the result is usually female urine. The term is coined after a Midwest party-pimp made it his duty to aggressively sniff all secretions left on his bed following any night with a lady.
Spencer and Meghan drunkenly hooked up. The following morning, Spencer believed a stain on his bed was from his Tequila bottle, and regrettably, he proceeded to Loomis Sniff the stain.