When a woman's breasts (see titties) are so big that they form a cleavage line, or ass crack, all the way up to her neck
by lou-man October 3, 2003
Get the assnecksmug. by schultz October 16, 2004
Get the assneckmug. by Billy Dean December 4, 2002
Get the assneckmug. An anatomical imperfection whereby an individual has a sufficiently large or high ass such that there is no clear definition of where ass ends and back begins. Ass, back and neck merge into one.
by King Toad October 1, 2003
Get the assneckmug. by mofoya May 19, 2003
Get the assneckmug. by Cannoli April 3, 2003
Get the assneckmug. 