There's Smaller: Max Planck Naming Joke Meme

This is a single-panel meme with a text dialogue setup above a historical black and white portrait of physicist Max Planck. The fictional conversation depicts Max Planck telling his wife Marie Merck that he has discovered the smallest possible length in the universe, and asks for her suggestion on what to name it. She replies "Planck length", before cutting to Planck's deadpan, unimpressed facial expression. The joke relies on a crude double entendre: while the Planck length is a real, well-established scientific unit representing the smallest theoretically measurable length in quantum physics, the punchline implies the unit is named after Planck because the length of his penis is that small, explaining his displeased reaction. The original title of the meme, "there's smaller", further reinforces this phallic joke implication.

As specified in the provided source information, this meme originated on Reddit, posted in one of the platform's popular meme-focused subreddits. It uses a public domain formal portrait of Max Planck, the Nobel Prize-winning German theoretical physicist who founded quantum theory, after whom the real Planck length unit is officially named. This is an original user-created meme that combines real scientific terminology with a lowbrow sexual joke, and it circulates primarily on English-language social media and meme sharing platforms.