Remastering and updating a classic like Call of Duty 4: Modern Warfare also gives developers a chance to clean up any goofs from the original, charming though they may still be.
Redditor DaJeroen happened across this wet-floor signage in Modern Warfare Remastered, and immediately got the joke. This is a part of the map where users could glitch out of the play area altogether, falling endlessly through a distorted alternate universe.
Modern Warfare Remastered is part of Call of Duty: Infinite Warfare, which launched on Friday. For more on the game, see our review.