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2.
Akin to the well-known Muffin Top, 'Milk Tops' are the mammary equivalent. They are often observed on women wearing an underfitting brassiere.

Milk Tops are commonplace in provincial France where they are flaunted by young women to attract the attention of men. Milk Tops have a characteristic 'wobble' depending on their age and size. They are known to be highly attractive to men, especially when seen on well endowed young waitresses.
..."did you check out the Milk Tops on her?"
by TRG Guys October 22, 2012
 
1.
when a girl gives you head so good u nut all on her face (milk being nut, top as in being her head)
dam, man oh girl gives some hell of a milk top
by sms boys June 03, 2009