Answer:
I increase head turning rate tremendously for girls at the beach
What two keys cannot open any door?
Curtail me thrice I am a youth; behead me once a snake; complete I'm often used in truth when certain steps you'd take.
I row quickly with four oars but never comes out from under my own roof.
What gets sharper the more you use it?
What did the piece of wood say when he saw the screwdriver and screws approaching?