The 'Square Up' meme encompasses various images of animals, drawings, or characters striking a combative, boxing-like pose. The phrase itself is urban slang for preparing to fight or settling a dispute. One of the most popular iterations features a small bird with its wings folded like human arms, looking surprisingly ready for a brawl. It gained massive popularity on platforms like Twitter and Tumblr as a way to jokingly challenge someone or express a feisty attitude despite one's size. Today, it remains a versatile template used for everything from gaming rivalries to lighthearted social media call-outs.