I'm sorry but if isn't the most ridiculous thing I've ever heard....
"Scientists believe that early exposure while still in the womb can reduce youngster's sensitivity to the underlying bitterness of many alcoholic drinks, making them more appealing."
Apparently, researchers at SUNY in Syracuse believe that women who drink can give their unborn babies a taste for alcohol by doing experiments on rats. "When offered the choice of sugared water, alcohol, or quinine flavoured water, rats who were not exposed to alcohol [in the womb] tended to plump for the sweeter alternative."
Source: Mothers who drink while pregnant can give their children a taste for alcohol