What is Slack Fanny?
1.
In Devon (West of England), an idle, slow and incompetent person who is no use to man nor beast. Just like a slack fanny (whether British or American), someone who does a poor job of whatever they are meant to be doing.
'That Pete's such a slack fanny. Three bloody years I've been waiting for him to look at my roof.'
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Random Words:
1.
Another name for calling people "Douche Bags" when you want to say it in the literal way. It's quite an insult.
Person ..