In stark contrast to terms like hyperscale and planet-scale that describe massive, growing systems, a Parscale is something that only delivers one thousandth of what was promised.
"Did you see that Tulsa rally? 1 million people registered and only a thousand showed up. That's totally Parscale, and it's all Brad's fault."
Light commonly used in theatrical settings or for bands and soforth. Short for parabolic reflector in a can - it's basically a car headlight, very high wattage (typically 500-750) and quite bright. They're also known for being quite cheap and throwing a nice, even light but not being nearly as flexible as an ellipsoidal or fresnel.
If you drop a light from the catwalk, you're in deep shit - unless it was just a parcan.