Last week I bought my first slow cooker and today my roommate had the idea to heat it up — and you know what?

But even with such a versatile appliance, sometimes well-meaning roommates—or even ourselves—can accidentally misuse it. If your roommate decided to heat up “something unusual” in your new slow cooker, it’s perfectly understandable to wonder, “What could they have done?!” Let’s take a closer look at a few possibilities and maybe pick up a few tips on proper slow cooker etiquette along the way!

What unusual item might have been heated?
It’s natural to wonder what your roommate might have put in your slow cooker. Here are a few scenarios that might have surprised you—from the understandable to the truly bizarre: