Answer:
A little pool with two layers of wall around it. One white and soft and the other dark and hard. Amidst a light brown grassy lawn with an outline of a green grass.
When young, I am sweet in the sun. When middle-aged, I make you gay. When old, I am valued more than ever.
A little house full of meat, no door to go in and eat.
You seek it out, when your hunger is ripe. It sits on four legs, and smokes a pipe.
Die without me, never thank me. Walk right through me, never feel me. Always watching, never speaking. Always lurking, never seen.
What did the piece of wood say when he saw the screwdriver and screws approaching?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?