26. Rebecca Black's "Friday"
After appearing on The Daily What, “Friday” was reblogged by Tosh.0, Urlesque, Huffington Post and Buzzfeed. A month after the video was uploaded, “Rebecca Black” was the top trend on Twitter and shortly thereafter her video passed Justin Bieber's “Baby” in total number of downvotes. Endless GIFs and remixes, along with some celebrity covers, have resulted from the meme.