The built in sense that most men have that gives them the ability to become aware of, or observe a bare breast, no matter how far away, or how obscured by other visual distractions. Usually coupled with a man's mammary memory to keep stocking the memory with new bare breasts to enjoy.
Dave's mammary radar alerted him to the two women that were sunbathing topless on the beach nearly half a mile away.
by ajcook1960 December 12, 2009