The caption goes here. We're not talking 10 commandments here, or letter of the law, or Emily Post etiquette. We're discussing local style, i.e., behavior of people who've grown up picking, eating and sharing mangoes in Hawaii. They wait and hope that their neighbor will give them some.
Islanders are shy about asking.
I invited several new families to come share, so they have come. Besides, if you share your fruit, you get abundance. If a neighbor's tree hangs into your yard, you're usually entitled to mangoes on that branch. After all, you rake its leaves all year. This year's mango lode has been plagued by a fungal disease that causes black spots that look like tar.