Fire Trucks are Cold

Today the fire truck came to school. As you can imagine, William was excited. I have pictures because I bribed William's teacher to take my camera outside with them. I will upload those later.
Here is the conversation that took place after I had picked William up from class.
Will - Momma, my fire truck coloring book is cold!
Me - Why is it cold?
Will - It's so cold.
Nicky (my co-teacher) - William, is your coloring book cool?
Will - Ya, it is cool.
He is going through his speech explosion full of complete sentences and repeating everything that everyone says. It is just funny when he gets things crossed. To his credit, I am impressed that he recognizes that some words have multiple meanings.