Aperture Science gas mask turns your face into a Portal gunS

In case you've ever wanted to transform your mug into an Aperture Science Portable Quantum Tunneling Device, crafter Two Horns United has built one that fits right on your chin. I imagine it's incredibly useful if you're the kind of clumsy individual who frequently finds yourself plummeting off cliffs face-first. Wear it to the Portal golf course for extra thematic resonance.

[Two Horns United via Fashionably Geek]