NO.

When a man says NO - it is the end of a discussion.

When a woman says NO - it is actually the beginning of a negotiation.  This explains how all these sales ladies at cosmetic shops eventually get to bag a new customer for the product being promoted.  Be it a moisturizer, perfume, concealer, or wrinkle erasing cream, they first invite the unwilling shopper to try out the product.  Female shopper says NO....and then it all begins from there :-)