assnecks Share definition Flag 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 Damn, Dolly's rubbernecks are so big that she has an assneck! assnecks by lou-man October 3, 2003 0 0 Get merch Get the assnecks mug. Buy Now — $32.95 See more merch