(http://a.yfrog.com/img620/1576/ye45.jpg)
...I will take a dump in his shoes, cough up a giant hairball in his room right by his bed, and pee all over his bathroom floor!
"you're standing on my foot d!ckhead..."
(http://a.yfrog.com/img620/1576/ye45.jpg)
Oh good, the human is finally asleep. One hairball coming right up.