What's McDonald's nickname in your country?
McDonald's is called "makudo(マクド)" in Kansai,Japan.in kantou,Japan,It's called "Mac(マック）".
McDoof (Germany) = Mcdumb ;D
"Macca's" in Australia. "A Macca's run" is a visit to McDonald's for takeaway, usually via the drive-through.
In the US we say Mickey D's.
It's often called "Mickey D's" in Canada.
In France, McDonald's, but people often say McDo.
Interestingly, one of them not far from my home has its front entrance covered with a lot of languages: