(n) An ass so large as to simulate a shelf, table, nightstand, or other flat tabular object that one might set a drink, ash tray, plates, a TV, or what not on.
by Bystrick March 22, 2003
Get the shelf buttmug. by BWS June 13, 2005
Get the shelf buttmug. by Scottski.M April 2, 2009
Get the Shelf Buttmug. The top part of a nice round booty where the full butt cheeks meet the small of the back. It must jut out and fill a booty-loving man's heart with passionate desire.
Damn, look at that cute little thing with the nice curves. I just want to rest my face on that sweet butt shelf.
by 02050 loves 02333 November 16, 2011
Get the butt shelfmug. The bottom part of a nice ass where the butt meets the leg. There is definetly a crease. People with elongated asses that blend into their thighs don't have one.
Guys checking out a girl with a nice tight ass: Dude check out the that girl's ass. Do you see the butt shelf?
by Karen/Owen May 21, 2006
Get the butt shelfmug. by David A. Porter January 14, 2010
Get the Butt Shelfmug.