For example: you laugh at someone getting hurt on America's Funniest Home videos, and then are ashamed that you laughed at their pain. Or you want to laugh at an off-color joke, but are ashamed that you found it funny in the first place. Or someone tells you a story about a personal misfortune, and you find it funny, but you are trying not to laugh and are disappointed with yourself for finding it funny.
Sample: I was [word] when my boyfriend caught his privates in the zipper of his jeans.
Anyone?