Which phenomenon states that hot water can freeze faster than cold water?

we used to fill our ice trays with hot water, thinking they would freeze faster we tested the theory one day and discovered we were wrong.

Part 2 The paradox is Assuming that the universe is eternal, a question arises: How is it that thermodynamic equilibrium has not already been achieved?[4]

Since that "Heat Death Paradox" is 2nd most chosen option. I will explain what it is : The heat death paradox, also known as thermodynamic paradox, Clausius' paradox and Kelvin’s paradox,[1] is a reductio ad absurdum argument that uses thermodynamics to show the impossibility of an infinitely old universe. It was formulated in February 1862 by Lord Kelvin and expanded upon by Hermann von Helmholtz and William John Macquorn Rankine.[2][3]

I think it is due to convection currents that are set up, and keep the ice from forming on the outside first.