What is Rubber-biscuit?
1.
Describes a situation out of control, scattershot, making no sense.
"I'm having an affair with my next door neighbor's boyfriend, only she's a great friend and I don't know how to tell her that I'm in love with him. It's all just so rubber-biscuit."
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1.
This is a major insult only used when one has run out of the normal insults and needs something that will incompass all of the other ins..