15 Things We Used to Microwave That Shouldn’t Have Been Microwaved

There was a time when the microwave felt like magic. Toss it in, hit a button, and voilà—hot food (or at least something warm-ish and steaming). But as it turns out, not everything was meant to face the heat of those humming coils.

From metal mishaps to eggsplosions, the microwave has seen its fair share of questionable guests. If you’ve ever stood there wondering, “Can I microwave this?”—well, these 15 items are here to tell you: probably not.

15. Foil-Wrapped Leftovers

Aluminum Foil Wrapped Cylinder
Flickr

Aluminum foil might work in the oven, but in a microwave, it’s a fireworks show waiting to happen. Sparks fly, literally, and not in the romantic way.

14. Hard-Boiled Eggs

Hard-Boiled Eggs
Flickr

Trying to reheat a hard-boiled egg in the microwave was a gamble no one won. One second, it looked fine; the next, it exploded in a mini food grenade.

13. Metal Utensils

Stainless Steel Utensils
Flickr

Someone always forgot to take the spoon out of the mug. Cue the sparks, panic, and rapid door-flinging open.

12. Grapes

Grapes in plate
Wikimedia Commons

Yes, people tried microwaving grapes—and they turned into tiny plasma fireballs. Science experiment? Maybe. Snack? Not.

11. Plastic Takeout Containers

Plastic Takeout Containers
Flickr

Microwaving the leftover lo mein in its original container seemed convenient until the plastic warped, and the smell of regret filled the kitchen. Not to mention the potential for mystery chemicals.

10. Nothing at All

Microwave
Flickr

Microwaving an empty microwave is the ultimate “don’t do it” move. It can damage the machine faster than you can say “popcorn.”

9. Travel Mugs

Pan Am Travel Mug
Flickr

That insulated stainless-steel mug isn’t just keeping your drink hot—it’s reflecting all that microwave energy right back where it shouldn’t. And your coffee? Still cold.

8. Sponges

Microwaving a sponge
Flickr

The internet told us microwaving sponges killed germs. What they forgot to mention was the smell, the smoke, and the lingering sense of doom.

7. Sauce Packets

Hot Sauce Packets
Flickr

Those tiny fast-food ketchup or soy sauce packets seemed harmless—until they started puffing up like a balloon at a clown convention. And then, of course, they burst.

6. Styrofoam Cups

Styrofoam Cups
Flickr

Nothing says “I made a mistake” like drinking coffee that now tastes vaguely like melted foam. Bonus points for having to clean the sludge off the rotating plate.

5. Hot Peppers

Hot Peppers
Flickr

Throwing hot peppers in the microwave is the easiest way to gas everyone out of the kitchen. The spicy steam is brutal and unforgiving.

4. CDs and DVDs

CDs and DVDs
Flickr

Sure, it looked cool for a second, like your own private lightning storm. Then it smelled like burnt plastic and poor life choices.

3. Brown Paper Bags

Brown Paper Bags
Flickr

Trying to DIY popcorn in a lunch sack seemed like a good idea… until the whole thing caught fire. It turns out that brown paper isn’t microwave-safe after all.

Read More: DEBUNKED Urban Legends That People Still Repeat

2. Whole Fruit

Mixed Fruit
Flickr

Bananas, oranges, apples—if it was round and fruity, someone probably tried nuking it. The results? A juicy, oozing mess or a mini explosion.

Read More: 20 Things We All Did in the ’80s That Would Never Fly Today

1. Tin Cans

Tin Cans
Pexels

Microwaving an actual tin can is like asking your appliance to self-destruct. It’s loud, it’s dangerous, and it’s peak chaos-in-the-kitchen energy.

Read More: 15 Easy Meals That Kids Can Make by Themselves

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