When and Why did I Come up With Macabre?

I was watching 'Nightmare Before Christmas' and they called Jack Skellington the 'master of the macabre'. I asked my mom what that word meant, and she told me it was like bad stuff and ghoulish morbid antics. I figured it summed Ben up, sooo I applied it to him. *sigh* I wish he could see this...he'd probably appreciate it...