Comment witticisms that quickly move to the top of the Youtube comment section, because of sheer hilarity or cleverness.
These were often kept at the top with the 'The Most Liked Comments'.
Despite youtube removing the feature and as well the dislike button (as of 2016). The youtube wit is a staple of the site.
"Video of women screeching in place a singing, with no discernible lyrics"
John Smith - ''I like how they need sheet music for this ' +86
Gamerdude2 - "this is the Youtube wit."
The youtube comment section is raw and unadulterated and that is what allows the youtube wit to flourish.