Look more closely; we've had these for years. These bloody things are now sold in nearly all party shops, variety stores, and supermarkets in the Netherlands, because US media (like films and music videos) and social media from America feature these as the cups you use for a party.

Your local Jumbo sells them. Your local Action probably too. They seem to be bought by teenagers mainly.

For the non-Dutch: the stereotypical plastic cup in the Netherlands is white and much smaller than these solo-cups. The trend is towards more environmentally friendly paper cups though.