They are users on the internet (often found on youtube) that like to seek attention by starting arguments with other users. They also like to belittle you just because you commented something. They would also try to get you to react to them so that they can turn a lot of users against you or get users to attack you.
Here is an example:
User: I personally believe that minecraft is better than fortnite.
internet troll: Wow, you type like a 2 year old and your a baby because you like Minecraft better.
user: Stop talking trash because your typing is worst.
---internet troll edits comment---
other user: +user just shut up already and you cant tell people that their typing is worst.
Here is an example:
User: I personally believe that minecraft is better than fortnite.
internet troll: Wow, you type like a 2 year old and your a baby because you like Minecraft better.
user: Stop talking trash because your typing is worst.
---internet troll edits comment---
other user: +user just shut up already and you cant tell people that their typing is worst.
This guy is totally an internet troll, he started a bunch of crap with me because i said that Minecraft was better.
by Hyp-Word-Generator December 19, 2018
Get the Internet trollmug. by dranalog July 25, 2017
Get the putin trollmug. A paid employee whose job is to patrol the Internet and search for comments and post that negatively portray the employee.
Coco is a payroll troll for Charnelhouse and her job is to flag consumer reviews that suggest Charnelhouse products are crap.
by Actsolotl February 5, 2010
Get the payroll trollmug. A person who cannot stop snacking, is always in the cupboards or fridge. Eats everything and anything.
by Hacker8365932826 March 21, 2011
Get the Cupboard Trollmug. 
A breed of mythological creature that lives in the forest of magical silliness. Their everlasting enemies are the alabaster dwarfs. They are wild and untameable beasts, who roam the forest on dark nights, looking for earth dwellers. They beat them over the head for fun, with their wooden clubs that are stained with goober blossom blood. They also kill goober blossom plants so the alabsater dwarfs have no food, because they find it quite humourous.
The trolls diet is very simplistic. They feed on each other, and only need to eat once every month. If a troll dies, they eat it after it rots, so the flesh is tender. Their life span is very long, so sometimes the trolls must sacrifice one of their own in order to survive. During the sacrificial ceremony, the trolls throw the bodies of alabaster dwarfs at the troll being sacrificed, until it is fully buried, and it suffocates.
Cannibalistic trolls mate once every three hundred and sixty five days, and give birth to approximately ten children for each pregnancy, which lasts about five days. Young trolls eat squirrels and fairies until their three inch long teeth grow in. At this time, they are now able to eat the flesh of their own kind. The trolls are solitary animals, but coem togeher are a comuntiy on full moons, for that is the night that they feast.
The trolls travel all throughout the forest of magical silliness, but take shelter beneath the roots of the giant peach trees. They gaurd the peach trees, which makes them very hard to chop down. They only clean themselves if they are being sacrificed, and they bathe in the juices excreted from the womb of male cannibalistic trolls.
It is presumed that by 2010, the cannibalistic trolls will have wiped out all of the alabaster dwarfs. Please help us kill off the cannibalistic trolls so the alabaster dwarfs can be saved, even though they are basically doomed to fail.
If you would like to try and attempt to save the Dwarfs, feel free to donate to the Save The Alabaster Dwarfs Foundation (SADF).
The trolls diet is very simplistic. They feed on each other, and only need to eat once every month. If a troll dies, they eat it after it rots, so the flesh is tender. Their life span is very long, so sometimes the trolls must sacrifice one of their own in order to survive. During the sacrificial ceremony, the trolls throw the bodies of alabaster dwarfs at the troll being sacrificed, until it is fully buried, and it suffocates.
Cannibalistic trolls mate once every three hundred and sixty five days, and give birth to approximately ten children for each pregnancy, which lasts about five days. Young trolls eat squirrels and fairies until their three inch long teeth grow in. At this time, they are now able to eat the flesh of their own kind. The trolls are solitary animals, but coem togeher are a comuntiy on full moons, for that is the night that they feast.
The trolls travel all throughout the forest of magical silliness, but take shelter beneath the roots of the giant peach trees. They gaurd the peach trees, which makes them very hard to chop down. They only clean themselves if they are being sacrificed, and they bathe in the juices excreted from the womb of male cannibalistic trolls.
It is presumed that by 2010, the cannibalistic trolls will have wiped out all of the alabaster dwarfs. Please help us kill off the cannibalistic trolls so the alabaster dwarfs can be saved, even though they are basically doomed to fail.
If you would like to try and attempt to save the Dwarfs, feel free to donate to the Save The Alabaster Dwarfs Foundation (SADF).
by LEAHANDJENNA May 18, 2008
Get the cannibalistic trollsmug. Dude my grandma got date raped by some guy at a bar." "Wow that is fucked up. She needs to protect herself from those damn rape trolls.
by Metallichuck June 28, 2010
Get the Rape Trollmug.