The Mysterious Pink Foam That Appeared on My Wall

Yeah, that’s how my Tuesday started.

I walked into the kitchen, coffee still brewing, and there it was — a weird pink foam stuck to the wall. It looked like a tiny pussy willow, about eight centimeters long, slightly bent, and oddly crunchy. It had glued itself into the corner, as if it had magically sprouted overnight. At first, I thought it was a mutant shrimp or some dried-up candy. (I hadn’t had caffeine yet.)

Of course, in full panic mode, I did what anyone would do — I posted it on Reddit.

Was It Alive? Fungus? Something Worse?

The theories poured in fast. Some people guessed insulation foam. Others suggested bug casings. A few were convinced it was alien larvae. (Ah, the internet.)

The thing didn’t smell. It didn’t move. It didn’t feel natural. Yet, it didn’t seem like something to dismiss either. There were no holes above it. No obvious source. Just a pink blob plastered to my wall, as if it had unfinished business.

Then My Landlord Showed Up

Enter the protagonist: my landlord. He walked in like it was a normal Tuesday and cleaned it off with a disinfectant wipe. No gloves, no hesitation. One bold swipe, one crunch, and it was gone.

“Probably just sealing foam,” he said. “If it returns, call me.”

And that was it. A smirk, a shrug, and the lingering scent of Lysol. Landlords, man.

So What Was That Pink Foam?

Honestly? Most likely, it was old expanding foam insulation. Maybe it puffed out from a crack or seam left by a previous patch job or a long-gone screw hole.

Or maybe it could have been something stranger — a bug nest, a rogue fungus, or a warning sign that it’s finally time to move out. The truth? I still don’t know. But I have photos, an unsolved mystery, and a now very clean wall.

Do you have any idea what it could be?

How to Handle Pink Foam on Your Wall

Here’s my advice, based on experience (not expertise):

Don’t touch it with bare hands. You don’t know what it’s made of.
Photograph it. Capture it before it disappears or gets removed.
Inspect the area. Check above and below for screws, nibbles, or crevices — the foam might have expanded from a hidden spot.
Call your landlord or maintenance. They can safely remove it.
Get it tested if unsure. Especially for mold, pests, or chemicals.
Share any odd sounds. If it crunches when you pull it, definitely post it online — the internet loves a mystery.