Shelfing is an activity where people try to fit themselves inside a closet. It is a prerequisite for proper shelfing that the closet is not larger than your body volume plus 0,5 m3.
I saw two gals at the museum who had lots of fun shelfing in an antique closet, with the curator planking on the top of it.
by Saturninus October 31, 2011
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Shelfing is the the act of one inserting drugs into the anus. Using your finger, about middle knuckle deep if you reach back you’ll feel a little shelf. Place the drugs onto this otherwise they will just come back out. App
“Oi Jimbo lets shelf some pingers before we hit the clubs”

“my friend Rach, introduced me to shelfing mdma caps, best thing EVER
by Stacey147 March 08, 2021
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The act of placing drugs inside the vagina as a way of ingesting them
Molly is rolling so hard after shelfing that pill
by FestivalNurse June 12, 2017
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A common photography pose in which a person places their hand beneath their chin, forming a sort of shelf for their head to rest on, in order to better frame their face. When such a pose is used for a selfie, the resulting image is called a "shelfie"
"Excellent use of shelfing, Sasha! What an exquisite shelfie!"
by flyingpenguin December 13, 2014
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The act of sitting on an elevated surface while consuming alcohol at a social event to lure the opposite sex.
"Let's go shelfing at the bars tonight!"
by Lyfjhdwrgcs April 05, 2016
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Lame or old fashioned. Not cool, popular or trending.
“Those shoes are shelf, no one is wearing them anymore.”
“You’re so shelf. Why would you say that?”
by Da Dubs December 03, 2020
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