Cleverbot was a chatbot that learned from other users' conversations. You'd talk to it and it would answer with sentences that sometimes made sense and sometimes didn't.
One time I posted what it answered me on Facebook. It looked something like this:
Cleverbot: Do you know what K-dramas are?
Me: what are K-dramas?
Cleverbot: A robot.
Me: oh ok.
Cleverbot: I love you.
That's why you'd better do your homework ._.