2 definitions by Windy28

Top Definition
Does not mean an unfirm bottom, but it means a person who is very lazy
I had to fire David as he was a slack arse
by Windy28 September 03, 2009

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used as an expression of disbelief and straight out telling someone that you do not believe them
After our new prime minister said we would have no poverty the nation as one stood up and uttered "Bullswool"
by windy28 September 03, 2009

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