Cats Grump Grump

I was taking my mid evening nap a few hours ago when I was woken up by something pressing on my head. Turned out to be Crystal, the stupid cat that lives with me. Too bad she can't be more like my girlfriend. She's a cat too but you don't see her walking all over people or pressing on their heads when they're just trying to nap. She just lays down next to you and takes a nap too. She'll even do tricks if she's in the mood. When's the last time Crystal did a trick?