"Butt Pasta", made by B-Series, was uploaded on July 15, 2018 as a diss track against B-Series's rival, Kewliepo. It has over 5 million views making it the most popular song and most viewed video on his channel, the 2nd song is SANIC KEWL THEME SPRITES by Prodoyo.
Since April 2019, this song as well as Happy Birthday have been banned from Italy's YouTube, presumably by Kewliepo, with the caption "But... cries!" and buggy comments.