SpongeBob's alarm clock is an alarm clock in SpongeBob's bedroom. It appears in various episodes, starting with "Help Wanted." It going off has become a commonly used sound effect throughout the series.
SpongeBob's alarm clock is an alarm clock that appears to be a repurposed foghorn and is kept on a barrel next to SpongeBob's bed. It also has a clock on the bottom of it and a switch behind said clock to set the time. In some of its appearances, it is depicted with a snooze button.
Role in series
The alarm clock makes numerous appearances throughout the series and is typically heard going off near the start of an episode when SpongeBob wakes up in the morning. It typically blows air near SpongeBob's direction while going off and has transported him to his various destinations after he wakes up, as seen in many episodes (e.g. "Something Smells," "Missing Identity," "Life Insurance").
Despite having seemed to be destroyed near the end of "Pet Sitter Pat" as a result of Patrick and Gary's fight, it is shown to have recovered after this episode.
It shows signs of sentience in "Gary's New Toy" and nearly loses its energy, as evidenced by its coughing from a lack of oxygen due to Gary chewing on it among other things in SpongeBob's house.
In the episode "Don't Wake Patrick," SpongeBob turns the volume on his alarm clock up and sets it to the waking hour in an attempt to wake Patrick from sleepwalking. The noise is so loud that it wakes several citizens up and causes worms to start barking, however it fails to cause any affect on Patrick, as he continues sleepwalking.