Did you know that dammit is a noun?

I was drawing shapes with my 4-year-old son yesterday. He's got the circle, square and rectangle down pat, but struggles mightily with the triangle. After multiple frustrating attempts, he drew yet another non-triangular shape.
"Mommy, that's not a triangle! That's a dammit!"
Once I cleaned up the coffee that had spewed from my nose, I corrected his use of that word.