The McFlurry Party comes in an over-sized cup and is meant to serve two-to-four people (or someone with a very big ice cream hankering).
It comes with a number of smaller cups so you can portion it out accordingly. It also comes with a lid, in case you want to take it home, but given how quickly soft serve can melt, is probably more serviceable for dining in.
While the idea of a fast-melting, shareable McFlurry may seem a little odd to us here in the States, where roughly 70% of McDonald's sales come from the drive-thru window, McDonald's restaurants in France (as well as a number of other countries) have more of a sit-down dining emphasis.
Photos via McDonald's France.