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1.
A challenge consisting of one brave lad trying to chug a rack of Keystone Lights up is anus. This task is very challenging and few have succeeded.

This challenge directly tests your girth for example, someone who can do the challenge and survive has incredible girth.
Jack: Oh no what happened to grant?
James: I gave him the Girth challenge and he couldn't take it.
Jack: Thats awful will he be okay?
James: probably not, he had pretty weak girth.
by Keith Stone girth August 07, 2011