
My arse!
Sarcasm Alert
The phrase is often used sarcastically to mock or discredit someone's claim.

He says he's the best player on the team, my arse!
Very Informal
It's a very casual phrase, not appropriate for formal situations or respectful conversations.

She's going to do all the work by herself, my arse!
British Usage
'My arse!' is primarily used in British English, so it's less likely to be understood outside the UK.

You've read all these books? My arse!
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