From the way they are laughing, it doesn't look like it. Bitcoin was never funny. The only crypto that can create similar reactions would be Dogecoin, but the whole adoption would be unsuccessful, because people in general barely know how to use smartphones and on top of that i'm pretty sure that McDonalds wouldn't advise random people to buy extremely volatile digital currencies just for a fun moment.
Edit: It looks like in the past they accepted monopoly money http://boardgamegeek.com/thread/921604/mcdonalds-accepting-monopoly-money-one-day-only
So there you go. It has to be some stupid shit that normal people could come with and pay for the products.
credit card and cash are not fun, but they accept it. If BTC looks like serious payment method they won't avoid adding it because it is not fun