Answer:
How many bricks does it take to complete a building made of brick?
Bobby likes Jimmy but not Joe, apples but not pears, jeeps but not vans, shinny but not hockey, tennis but not squash. Who will he like, Sara or Sally?
What starts with a P, ends with an E and has a million letters in it?
Mouth up it gets filled, mouth down it gets empty.
Where humans breathe liquid.
I am used for light yet I am solid. Without me you would feel enclosed. I hate being touched especially with a lot of force. I like to be in buildings.