What is the highest tax you have ever paid from poker winnings?

[SlotsMaster]

We know that winnings in the casinos are taxable, that is what we are meant to believe and I want to ask the maximum amount that we have actually paid out as taxes on winnings that we have received in playing the poker. It is only important for us to talk about this so that we can measure the amount of taxes that we have actually paid to the government while playing the game. Your contributions will be highly appreciated.