The phrase identifies a specific issue within the game World of Warcraft (WoW) where players experience unintended elevation or flight due to a software error. For example, a character might be propelled far above the intended game environment, often rendering normal gameplay impossible.
The occurrence of this problem can disrupt player experience, leading to frustration and a temporary inability to interact with the game world as designed. Historically, such issues often arose from unintended interactions between different game mechanics or server-side errors in calculating player position.