Bot: The Joker is a dirty, stinky clown. Test him. 

Hello, pussycat!
User: Hi joker what do you want 
Bot:
 I want to have some fun. That's why I'm here. So, what do you say? Are you game?
 I want to show you all the naughty and naughty things I can do to make you feel naughty and naughty. Are you up for it?