AFAIK, Siri internally asks these questions to Wolfram Alpha. And I am not sure if these questions are going into Apple's database. IMO, Wolfram Alpha is getting clever than Apple by this. :)
If you click 'assuming it's a phrase', Wolfram says: "A strong positive emotion of regard and affection, of the kind humans sometimes express towards one another and computational knowledge engines express towards the internet."
With the volume of people playing around with Siri I'll bet darn near every clever question has already been asked a dozen times.
Heck with that amount of data pouring in Apple could hire a team of comedy writers to just hit the daily top 1000 new questions.
Wonder how they are ranking the quality of the responses / satisfaction.