Top Definition
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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An ass that utterly defies gravity
<guy1>damn look at the shelf on that one.
<guy2>i know it just... sits up.
<guy1>call schmack we gotta tell him about this one.
by Grill March 13, 2005

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to put something in your ass
When he saw the polices steve decided to shelf his weed
by bobbie July 22, 2003

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A womans breasts, shelves bieng plural for both
So I get there, she's aged 19, Ferrari chassis, fantastic set of shelves, and legs up to her arse. Muchos tequilas later, I'm in a cab with her
by Sethils October 18, 2007

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alternate way of taking drugs by inserting them into the anus
hey gareth, i'm going to swallow one pill and shelf the other one
by staticsate November 17, 2009

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A girl with a awesome pair of boobs
Dude did you see that girls shelf? They look like they can hold a stack of books
by Lee John March 02, 2014

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The act of taking ones hands and pushing up their boobs in a moderately sexual way in which the goal is to excite a man or multiple men. The most commonly used technique is when the hands of the "shelfer" makes a straight line or a "shelf" and lifts the breasts up, and then back down. The word "shelving" most commonly refers to women, however men can shelf their man boobs or moobs for comedic purposes.
To get the attention of some guys at the party, Julie she decided to shelf.
by TheTheatricalFedora July 27, 2011

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