A fairly popular thing on 4chan's anime- and manga-board /a/:
Once a day a tripfag called Sakura !Fish2Mlhz2 posts this image
with the line "I'm going to post this everyday until you like it." (The girl happens to be Sakura Matou from the Japanese visual novel Fate/stay night.)
People respond differently to it though, some of them say things like "I already liked it.", others will respond "I HATE IT!".
There are quite a few derivatives for it, for example these…
We already had a thread for this about 2 years ago btw.
So, do you think it deserves an entry?