To insert an ecstacy pill into your anus.
'Are you shelfing it tonight?', or 'Have you ever shelfed it?'
by Alex Lumb April 23, 2008
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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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A way of taking ecstasy.


http://youtube.com/watch?v=fYMloZpfelc
Alex: "how should i take this pill?"
Trent: "just shelf it"

Process:
1. pull pants down.
2. bend over.
3. place pill on the tip of your finger.
4. insert into your rectum.
5. wait for the effects to take hold.




** this method has a stronger feeling than swallowing the pill.

** the is also an increased risk of over dosing by "shelfing" a pill.
by Wodon! July 14, 2008
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An ass big enough to hold belongings such as books
That lady doesn't need a backpack because she has a shelf.
by mew May 19, 2003
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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 9, 2021
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if someone, especially a woman, is on the shelf, they are not married and people now believe they are too old to get married I was afraid.
my daughter would never find a husband, that she'd be left on the shelf.
by Langfreak February 4, 2016
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The female gluteal fold that shows itself when wearing a pair of fine ass jorts. (Underass equivalent of the underboob).
Yo, me and my bros, Eddie, Wood, and Buddy were opening up a set around Budapest on independence day and popped from 6 to midnight from all the shelf milling about.
by Jesty25 July 26, 2015
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