The 'Oh My God' sound effect, popularly transcribed as 'Ohmagaa,' became a viral sensation across social media platforms like TikTok and Instagram Reels. The sound features a high-pitched, incredibly exaggerated gasp followed by the phrase, capturing a sense of genuine but over-the-top disbelief. While the specific audio has various origins linked to viral reaction videos and gaming clips, its usage evolved into a universal shorthand for 'main character energy' or reacting to minor inconveniences with extreme drama. Creators often pair the audio with slow-motion zooms or face-warping filters to emphasize the comedic shock, making it a staple for storytelling and 'storytime' content online.