I've seen this referred to as the "goes-to" operator:

    size_t i = num_burritos;
        while (i --> 0)           // Read: while 'i' goes to zero
            if (want_burrito(i))
                break;

While it sounds nice, I don't think it's a good idea.

Clearly the correct solution is to use a better language, e.g.:

    return next((burrito for burrito in reversed(burritos) if burrito.wanted()), None)