I'm sure the joke responses are deliberate, just as Infocom text adventure games were programmed to be 'smart' enough to respond to predictable human input.
It's not like they had a bunch of people sitting around a conference table thinking up the phrases people might ask it. It's a natural language parsing engine; it understands "horny" as sex, and pulled up related Yelp listings.
I'm sure the joke responses are deliberate, just as Infocom text adventure games were programmed to be 'smart' enough to respond to predictable human input.