Banana milk is odd, both loved and hated it as a kid, and nowadays something about it makes me feel really ill (even when accounting for lactose intolerance), yet I love the banana from banana and prawn sweets.
In a similar vein hotdogs make me feel like death, like doubled over from stomach cramps
They're a classic English pick'n'mix sweet, with a texture that basically like somewhere in-between a candy cigarette that's been inflated/puffed up and what I imagine the circus peanuts candies (which we don't have in the UK) would be like, flavored with artificial banana flavour and I think the prawns are supposed to be strawberry (but I honestly don't know).
They're somewhere in-between gross and great, depending on if you like sweet things or not.
I've never heard of banana milk but as a kid I discovered that I loved to chop up a banana and eat it from a glass of milk. Is that it? Also, banana smoothies are tasty. Chocolate banana spoothies are tastier. But banana and strawberries and chcoloate smoothies are gross.
Try freezing peeled ripe bananas. Then puree them in a blender with some chocolate and peanut butter. Refreeze and you get a chocolate peanut butter banana "ice cream."