If you press the button do you get the entire bucket of ice cream to yourself?
You have the only button, and if you push it all other posters die.
At the end of 3 minutes everyone is released regardless and gets a bucket of ice cream to share.
Do I have to eat the ice cream? Because that's the deal-breaker.
Seems like one of those mindgame traps that punishes selfish people. Anyone who presses the button probably dies.