Lighter, Historical Dictionary of American Slang:
 usu. pl. a woman's breast.
1957 Kohner Gidget 54: Some jugs!
1958 Camerer Damned Wear Wings 63: Jugs on her like cantaloupes.
1959 Farris Harrison High 386: Turn just a little this way and stick those jugs out at me.
a1994 A. Radakovich Wild Girls Clubs 136: I hope I don't get big jugs like yours.
Dictionary of American Regional English:
 A woman's breast Cf can n 3b
1965-70 DARE (Qu. X31, ... A woman's breasts) 13 Infs, scattered, Jugs; GA89, MS86, MO29, TN52, Ninny jugs; GA77, Milk jugs. 1983 De Vries Slouching 234 ND, With the other [hand] she secured her bathrobe lapels about a pair of jugs on which I certainly had no designs.http://www.urbandictionary.com/define.php?ter...
Jugs the best words to describe boobs i love big jugshttp://www.macquariedictionary.com.au/mdi1000...
3. (plural) (Crass) the female breasts.