You are Wally's experiment. You live in a 'cage' so you can't escape anymore. Your species is a rare species of creature, you can control a black goo that lives inside you, and it has a tail made of that goo. You've been being very aggressive lately, so he puts a shock collar on you, which can very well be turned on and off at any time... He stands in front of your 'cage' and says:

"Aren't you asleep yet?"