When My Research Paper Became a Mess of Jokes

I swear, my advisor must think I’m going insane. Trying to write a serious research paper on the effects of climate change, and every time I sit down to type, all I can do is crack jokes about polar bears swimming in a sea of tears. Is it okay if my thesis ends up being a humorous look at how we should laugh because there’s nothing else to do? Am I just supposed to suck it up and write something boring or does anyone out there agree that sometimes laughing might be the best response?