"This was back in the day, but my first job was at McDonald’s. One day we got a call from a sister store asking if we’d had any complaints about our shakes. I said no. They did if we did refer it to them…
Turns out a mouse had died in the machine at some point and had been chewed up by the internal mixer… Yeah, I don’t get shakes from there anymore and I eye the ice cream especially hard."
And about it being unhealthy... It's fast food... If you want to eat healthy obviously don't go there.