Answer:
What three letters change a boy into a man?
There is one in a minute two in a moment and none in a thousand years. What is it?
I hold two people together but touch only one.
I look like a tiny trombone
The more you work the more I'll eat.You keep me full I'll keep you neat.
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.