The term is an extension of its former expression 'Bollocking' Used to thoroughly inform and highlight a person’s ill behaviour, raising awareness in order to prevent the action from occurring again in the future.
When paired ‘Ramshack’ indicates the issues raised are far beyond repair, alternatively it may refer to complete insolence in ones errors.
“My boss gave me a proper RamShack Bollocking yesterday.”
“I can’t believe Bert defecated in your oven”
“I know, he’s getting a right RamShack Bollocking when I see him.”