Answer:
The more you look at me The less you see.
I am rarely touched but often held and if you are smart you'll use me well.
A young man wants to have me but when he has me he no longer wants me. Blade in hand he attacks me and does his best to remove me. Yet he knows that it is all in vain.
I let water fall on you while everyone else stays dry. What am I?
An action done on mosquito bites
I flow from the Homerβs mouth when he sees doughnuts.