"That chick's Nalgina was so spacious my Nalcock (large, Nalgene bottle shaped penis) almost didn't fill it."
by LWW July 11, 2006
The Nalgina is the fleshy skin flap between the female vagina and in Spanish, the word for little buttox, "nalgita." It is also commonly referred to as the "perenium," "grundle," or the "gooch," located similarly on males between the penis and the chocolate eye.
by Los-Dogg August 19, 2007