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1.
The sheer enjoyment of men wearing ladies underwear when in the company of fellow men.
Wow i had a top shackleton. Forget the castello moment, that was a real shackleton moment. These lacey french knickers made me tingle with sheer shackleton.
by S. Todd February 09, 2007
 
2.
Shackleton, a famous explorer, is also a PWNinator and burninator on the xoxo board where the likes of MadCatDisease prance.
Shit. That guy just got PWN3D by Shackleton!
by Shaqlton November 27, 2004