WhatChaMaCallIt

Saw this today at a friend's house. I was told this bean is edible and invited to try a fresh one from the plant. Are you kidding me? I was told also to munch on some kind of a small leaf that is as sweet as sugar without the calorie. Really? No, thanks but no, thanks! I have no idea what this vine is. The one thing I am sure of is that Miami is the paradise for vines. Tons of them in every size, shape, form and color.