Tags: aperture, aperture-laboratories, aperture-science, aperturescience, brony, cross-over, crossover, cute, derp, derpy, derpy-hooves, ditzy-doo, friendship-is-magic, mlp, mlp-fim, my-little-pony, my-little-pony-friendship-is-magic, mylittlepony, pegasus, pony, portal, portal-2, portal-gun, portals, science, tv-shows
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