A combination of the two insults Peacho and Kuffar. A Kupeacho is someone who fails at everything they do. To call someone a Kupeacho is very serious indeed, considering that a Kupeacho is even more incompetant than a regular Peacho.
"Man, I thought he was a Peacho before, but now I think he's a complete Kupeacho."
A Kuperman is similar to Superman. Such a hero. Anybody with this in their name is automatically cool with everybody.
Nobody should mess with a Kuperman, they can ruin your life slowly, but if you are on their good side, they will be by your side the whole time. They don't get pushed around since they always stick up for what is right.
You should find a Kuperman and keep them close forever.
They could change your life.