A TikTok has gone viral of a man getting free fries from McDonald's and it's the easiest hack to ever exist.
All you need to do is buy a large fry and when you run out, you just ask for a refill. That's right. You can get refills on fries from McDonald's! *MIND BLOWN*
Apparently it varies by each franchise, but why not just try it out for yourself. If they say no, they say no. If they say yes, then you just got yourself some free fries!