The Swedish computer-animated Crazy Frog character is literally known as "The Annoying Thing," and that moniker can extend to his songs as well. But despite how annoying "Axel F" was, the song somehow managed to find international success, peaking at No. 1 in countries including Australia, Spain, and Sweden. The song spawned a viral meme when a video of two boys lip-syncing and dancing to it hit YouTube.

Listen to the song here.