Header guards Memes

The classic tale of preprocessor pain! Our poor green frog friend discovers the horrors of working with a client who doesn't understand the critical difference between #pragma once and #ifndef header guards. The dev goes through the proper steps: asking about header guard preferences, explaining duplication errors with a detailed diagram (like the absolute C++ nerd they are), only to discover the client was clueless the whole time. The punchline? "It's pragma once" - meaning the client picked a solution without understanding the problem. This is the programming equivalent of explaining quantum physics to someone who then says "atoms are small, got it!"