Engineering students living in their own dimension where casual conversation is replaced by Navier-Stokes equations. The meme brilliantly captures that moment when someone asks a fluid dynamics enthusiast "how's it going?" and their brain immediately floods with partial differential equations instead of normal human responses. The Navier-Stokes equations shown are the holy grail of fluid dynamics - describing how the velocity, pressure, density and viscosity of a moving fluid are related. They're notoriously complex (one of the Millennium Prize Problems offers $1 million for solving them!), yet to engineering students, they're just casual chitchat material. That final "yea" panel is engineering humor at its finest - as if these incomprehensible equations are just a normal way to respond to "how's it going?" The title "Who Up Stoking They Navier Rn?" perfectly parodies late-night social media posts with "who up?" but for people who stay up late solving fluid dynamics problems instead.