Chronicle comic

That's actually a typo. He's supposed to say that he hates Liesl. She was his ex, and he's still sore about the breakup.

And now:
You see, it's funny because if someone is courageous, we say he or she has guts, while skeletons literally lack innards.

By the way, last week, Keen successfully ascertained the joke. If you wish to see what the previous jokes were, I have added the jokes in the comments section.