black fax

English

Noun

black fax (plural black faxes)

1. A prank fax transmission whose pages are entirely filled with a uniform black tone, so as to waste the ink of the recipient.
   • 2016, Jarice Hanson Ph.D., The Social Media Revolution: An Economic Encyclopedia of Friending:

     They also pranked the Church of Scientology members by sending hundreds of pizzas to the headquarters in Europe, and some sent black faxes (i.e., black sheets of paper sent to a fax machine in an endless loop to drain the ink and damage the machine) to the Los Angeles headquarters.