The equation Q = πPr²/8ηl is the Poiseuille equation, which describes laminar fluid flow through a tube. Our yellow friend here is having an existential crisis trying to pronounce "Poiseuille" — a French name that's basically the final boss of physics pronunciation. After several failed attempts (POS-, POIU-, POSI-), he gives up in frustration.
Every physics student has been there. You understand the concept perfectly, can solve the equations flawlessly, but then the professor calls on you to explain "Schwarzschild radius" or "Bose-Einstein condensate" and suddenly you're a babbling mess. The universal language of science, indeed.