Flat-Earth Filter
The double-secret, government-mandated modification applied to all video/photographic equipment installed on vehicles capable of reaching an altitude above 40,000 feet, the upper limit of commercial aircraft; this, in an attempt to sustain the global 'spheroid earth conspiracy'.
Ok. If anyone actually contends that the earth is flat based on their fucked up religious doctrines, the opinions of some crack-pot pseudo-science bullshit or weak-ass arguments of incompetent YouTube fanatics...they're just wrong. Do some spherical geometry; construct a 'triangle' on a spherical surface and measure the sum of the angles. Greater than 180? Wonder what that means...stick the flat-earth filter up yer ass.