Why is it that Wile E. Coyote always gets smashed by an anvil?

Why is the anvil used in a negative connotation?

Why is there an anvil shaped shadow above my head?

Why are my arms weak?

Anvil: a heavy steel or iron block with a flat top, concave sides, and typically a pointed end, on which metal can be hammered and shaped.

My falling anvil, are my mistakes.

But so help me GOD, that if you think I am just going to sit idly by and pull a sign that says "Mommy" out of my rear end, as the anvil approaches my head, then you should be shot out of an acme canon.

You are dead wrong.

I am going to take my anvil,

Make an Iron suit,

And put my anvil to good use.