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4.
when doing a fat chick dry and you wipe the sweat and oil from under her boobs and use it for lube.
I was doin big Mary and she was dry as cat litter so I got some booblube from under her tits and it worked great. I even found a sandwich to snack on afterwords yum!
by dondero2000 September 13, 2006
 
1.
Ky jelly deposited on the boob by an erect penis in the process of mounting.
One hot lady discovered boob lube, while mounting a verile young man.
by Jbroni August 03, 2007
 
2.
1) drool from a sleeping or catatonic woman's mouth that has trickled down to her breasts, therefore lubing them
Ever slip a chick a tranquilizer? She's so passed out she has boob lube all over her titties in about 2 minutes!
by Graven Sevagorn August 24, 2010
 
3.
breast milk
I got bored with my friend Mark and we decided to drink some boob lube for kicks.
by the uncanny faggot May 21, 2004