From time to time I get chance of buying boxes of bananas that are close to going out of date.
Has anybody tried them our before now and if so how did it go?

I have.

You might have to bruise them up a little to get them smushy enough to stick more to your body. The banana smell is palpable.

Stepping on them can help. But if they are already overripe, they might be soft already.

They don't stick, but the sensation/weight of the peels falling on faces/skin is nice too.

Then you can use them in place of other things too if you're into that.

I love over ripe Bananas....putting them in boxers and sitting on them and mushing them up.

Put one on top of my wife's head and maybe added to her undies not sure if I did. She was def grossed out from it being put on her hair

You can blend it with some milk/yogurt and make a gunge