Similar to head cheese or smegma on a male penis. It is the build up of skin, old deodorant, sweat, and lent that older women with large breasts must contend with. It stretches from the fold of their armpits to underneath large flappy breasts.
"Dude, you would not believe all of the bo bo cheese the nurse scraped from underneath grandmas tits before giving her a bath. The whole room smelt like ass...."
by sshir222000 August 21, 2009
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