The 'Ali-A Intro' meme revolves around the energetic and incredibly loud opening sequence of Alastair Aiken’s YouTube videos, primarily known for his Fortnite content. The intro features a flashy animation accompanied by the high-bass track 'Diplopia' by Monstercat. It became an internet sensation in 2018 when users began editing the intro into the middle of other videos as a 'jump-scare' or 'bait-and-switch' tactic. The meme typically mocks the hyper-enthusiastic clickbait style often found in gaming YouTube, using the sudden blast of music to startle or annoy viewers for comedic effect. It remains a staple of 'earrape' humor and internet subversion culture.