All "It Does a Body Good" jokes aside, human breast milk is probably the most disgusting "supplement" you could take to bulk up. So of course some workout junkies are buying it on the black market AND DRINKING IT!
According to the Today Show some body builders are calling it the best supplement ever. So good theyre willing to buy it on the black market from donors who haven't been screened.
Unless you can bypass and drink straight from the source, probably a bad idea.