The area between a man's scrotum and anus.
Danny has a hairy nifkin.
by Tom Leane May 24, 2002
the space between a guy's ass and his balls; can be used as an insult
Braden is a nifkin
by Erin June 29, 2004
The nifty piece of skin that provides a smooth connection between the pooper and the nut sack.
Ian's nifkin was enjoyed by the man that he met on thursday night after a forty of Ole' E.
by looooddd March 11, 2003
The hallway from the hot dog stand to the men's room
He slipped and chipped his tooth while traversing the nifkin.
by Geoffrey Scrotabula January 15, 2003
The area between your balls and your asshole
My nifkin is quite smooth.
by Maty Bublz November 27, 2006
the area of a male's body where gas (especially after eating refried beans) gets trapped until one's nutsack is raised.
After years of horrible gas due to stomach issues, Robb's nifkin has certainly paid the price... his nifkin smells like the sewer.
by Tommy Jackson September 20, 2007