"If the number of shits I have were the same as the number of IQ points you have, it'd be less than none."
For those saying that it depends on the situation, you're a tad clueless! OP is asking for your best, so who cares about the situation and just say your best. "I heard your mother was one of the best comedians in the world, her jokes are legendary - I mean - just look at you."