This is why they got sued by that woman who spilled the coffee on her legs, allegedly because they were serving coffee at temperatures significantly higher than the industry average, where you'd get third degree burns after 2 seconds of exposure.

The one time I tried McDonalds coffee was at a highway rest stop when I wanted some caffeine for the road. After 10 minutes of letting it sit outside, uncovered, on a cold day, it was still so hot I couldn't touch it and I ended up throwing it away in disgust.

I tried the iced coffee once, but you apparently can't just get it black - they premix all of their chemicals in to the entire batch. So that's a no-go, too.