1) A man of the meat trade who is sly by nature.
2) A lady's man who has more than onewoman on the go at the same time, but keeps this fact to himself through the cunning art of being sneaky.
1) Mr Bloggs the butcher only gave me four and a half pounds of brisket instead of five! That butcher is sneaky!
2) Ben really is a sneaky butcher; you never know where he'll put his meat!
When some resigns or retires from a job, they are on "eternity leave". This can also refer to someone who has passed away, especially someone who worked somewhere for a long time, retired/resigned, then passed away later.
Oh I'm sorry, you didn't know that Kelly is on eternity leave? She resigned and moved to Hawaii!
With regrets I would like to inform you that my boss is officially on eternity leave. I will never see or hear them again. Ever.