Everyone knows the annoying effect of inflation. Over time, prices go up and up and up, and we all just get accustomed to it without a thought. Naturally, fast food restaurants aren't immune from the effects of inflation, and McDonald's — the largest fast food chain in the U.S. — certainly fits that bill. So, when you nostalgically look back at the Mickey D's menu from the 1980s, you might long for some of those 1980s prices.