Answer:
The more you work the more I'll eat.You keep me full I'll keep you neat.
I am always hungry I must always be fed. The finger I lick will soon turn red.
Against the sun I protect your eyes and am often worn on the face of spies
Until I am measured, I am not known. Yet, how you miss me when I have flown. What Am I?
The more of me there is the less you see.
The profession of Jimi Hendrix and Eric Clapton
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic