Vaguely similar to a joke from Ninotchka that Zizek often uses about the difference between 'coffee without cream' and 'coffee without milk'. He usually uses it to reference the concept of negation in the Hegelian dialectic, but he's also mentioned the difficulty of computers understanding negation in the context of the coffee/cream example.

The joke from Zizek: https://www.youtube.com/watch?v=wmJVsaxoQSw