"Some people think having large breasts makes a woman stupid. Actually, it's quite the opposite: a woman having large breasts makes men stupid"

This quote by Rita Rudner is an amusing take on the stereotype that women with big breasts are not smart. She is recommending that it is actually the men who are made silly by the existence of big breasts. This is likely a reference to the concept that guys are frequently distracted by a woman's physical appearance, and that this can lead to them making foolish choices. Rudner is likely poking fun at the idea that guys are easily swayed by physical charm, which this can cause them making decisions that are not based upon intelligence. She is likewise likely suggesting that females with big breasts must not be evaluated based upon their physical appearance, however rather on their intelligence and other qualities. Ultimately, this quote is an amusing method of mentioning the double standards that exist when it comes to evaluating females based upon their physical look.