The Big Thumb Guy meme features Jacob Pina, who became an internet sensation in 2019 after sharing videos of his 5-inch long thumb on TikTok. The images quickly went viral across social media platforms like Reddit and Instagram, where users were fascinated by the thumb's unusual length. In meme culture, the template is frequently used to represent an oversized 'thumbs up' or to react to situations that require a massive seal of approval. It serves as both a surreal visual gag and a versatile reaction image for expressing extreme agreement.