Pfeffi, short for Pfefferminzlikör, is a bright green peppermint liqueur long associated with student parties and casual drinking in Germany, especially in the east. The phrase das war ein Pfeffi zuviel turns that familiar drink into a shorthand confession that the limit has been passed. Shared as a short voice clip, it spread through meme and reaction use rather than a known film or show. Creators reuse it whenever alcohol, regret and comedy meet, because German speakers instantly get the reference and others understand the tone from the delivery alone.