danger is my middle name

He was smashing a wooden truck against he window saying, "Window, window, window" (the boy really likes windows) and I said, "I can't let you smash your truck against the window, it's dangerous." 

He stopped, looked at me blankly for a second before a shit eating grin slowly spread across his face. He then said, "Danger..." as if it were his middle name, and gently put his hand on the window like he was hatching a plan.

I'm doomed.