Usufruct | the legal right to use and derive profit from someone else’s property, especially if it would otherwise go to waste, as long as that property is not damaged.
from the Latin phrase usus et fructus, meaning ‘use and enjoyment’. cf. ‘use and fruits’. Originially part of Roman civil law.
So it is actually legal to forage from people’s fruit trees, as long as you don’t trespass and they are clearly not going to make use of it themselves.
And if you live in LA, there is even an organisation devoted to revealing the choiciest spots for low-hanging usufruct action.
Now we know! Let us go forth and forage.