The Jack-O Challenge, also known as the Jack-O Crouch, originated from the fighting game Guilty Gear Strive, specifically featuring the character Jack-O' Valentine's unique crouching animation. The pose, characterized by the character resting her chest on the ground with her hips raised high, went viral in August 2021 after being shared on social media platforms like Twitter and TikTok. It quickly evolved into an internet-wide challenge where artists and fans drew various fictional characters, or even attempted to recreate the physically demanding position in real life. The meme represents a blend of gaming culture, artistic expression, and physical comedy, solidifying its place as one of the most recognizable anime-based trends of the decade.