As Nickelodeon's longest-running series, SpongeBob SquarePants has made a continuous effort to stay relevant and fresh to today's audiences. There's been several highly memorable and quotable gags on the show throughout the years, but one that has kept managing to make viewers laugh since the very first season is the recurring off-screen exclamation of "My leg!" from a certain fish.
Source：https://www.cbr.com/spongebob-squarepants-fred-the-fish/
