At least it was fast-enough shipping to have the bananananana get overripe.
Should that happen, though…
— ~2 overripe banananananas, ’though no brown/mooshy sections, and no attached “strings” (yecch)
— milk to cover
— sprinkling of sugar
Plop the bananananananas into a blender, sprinkle sugar to taste, just cover with milk, blend until smooooooth.
Even if the bananananananas are mealy and squish if you so much as look at them wrong, they’re soooooooo good as a shake.
Some people use honey instead of sugar, but to me the taste is just ever so slightly “off” with honey.
Vanilla extract optional, but I once ruined a batch because the extract was old and disgusting, so now I don’t even bother.
Enjoy. (Somebody send the recipe to Arrow in case that have too many leftover bananananananas.)