Answer:
I work when I play and play when I work.
What runs around all day. Then lies under the bed. With its tongue hanging out?
Bury deep, Pile on stones, My mind will always Dig up them bones
Three little letters. A paradox to some. The worse that it is, the better it becomes.
What contains zero calories, but if you consume it, you will probably gain weight?
What language does a billboard speak?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?