The act of tricking someone into watching Samwell's "What What (In the Butt)" video by sending them a link to the video, but claiming that it's a link to something they actually want to watch.
I'm going to Buttroll my friendSteve because I know how homophobic he is and it will really piss him off.
A person/being involved in an peaceful but dank online community called the Buttroles, a singular Buttrole may do anything that considers themselves a patron amongst this community which varies widely such as posting funny Memes, gaming amongst the leaders of the Buttroles and/or being a silent Buttrole who subscribes to the content creators involved.
Or as a fellow Buttrole content creator says "a cooler word for autism".
"I just recently watched the Buttroles play Minecraft yesterday on a fellow Buttrole YouTube channel so I subscribed to become a Buttrole"