to go on a particular youtube video daily and click the dislike button. you don't like the video at all, but you go there anyway for the sheer pleasure of contributing to the growth of the 'dislike bar' just because you hate it so much.
Eric: Man, I hate this song and music video!
Ed: Then why are you watching the video on youtube?
Eric: Oh I'm just here for my daily dislike.
Ed: Oh okay. What song and video is it?
Eric: Rebecca Black's Friday.