The 'Thour' meme is a hilarious internet staple featuring animals—most famously dogs—making extremely distorted, puckered faces after supposedly tasting a lemon. The name 'Thour' is a playful, intentional misspelling of the word 'sour,' following the linguistic trends of memes like Cheems or Doge. It captures that universal, uncontrollable physical reaction to high acidity, often used to represent awkward situations, bitter realizations, or literal sour tastes. The meme gained massive popularity on platforms like TikTok and Instagram, where the 'thour' lisp adds an extra layer of cuteness and comedy to the visual of a scrunchy-faced pet.