Answer:
The thinkers usually hold this body part
Is always in front of you but cannot be seen?
Sometimes you feel it weigh a ton. Yet it is nothing, but somehow still there. Makes you uncomfortable around anyone, But speak its name and it's gone.
A mechanism to discover who is following you.
There are 7 birds in a tree. A hunter shoots one bird down. How many birds are left in the tree?
I am a room that has a roof but no walls. What am I?
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?