Back when "iFunny Poops" started to trend and get stolen by Redditors and Feature Creature alike, it didn't have a proper term as of yet and those types of users would beg incessantly for the name and naming of this style of video. Extraordinarily quickly after they were asked this, one of the creators of these videos responded with "nigga rape" (this was before automod) and it stuck. I think it was either because it was an active deterrent to Redditors, or simply because you can't say it anywhere outside iF without being ripped to pieces. It might be both reasons probably. "Nigga Rape" is the official name for this style of shitposting.