Answer:
Thinkers hold this body part.
All about the house, with his lady he dances, yet he always works, and never romances.
Why do giraffes have long necks?
Why are there no living cats on Mars?
What is the cleanest language in the world?
When is it bad luck to see a black cat?
Funny
Animal
Difficult
Easy
Food
Kids
Logic
What am I?