[ithkuil]

For me, the most counterintuitive thing is that the more energy you put in the colder the black hole becomes.

Is there any other object that behaves that way?

[bonki]

Lots of human beings behave exactly like that...

[nh23423fefe]

temperature is analogous to surface gravity which gets weaker at the event horizon as the black hole grows.

temperature is not expectation of a kinetic energy distribution of micro constituents. you don't measure a black holes temperature with a thermometer because you can't get information out of a black hole

[ithkuil]

Doesn't a black hole radiate hawking radiation and a smaller black hole radiate with a higher temperature than a bigger one?

[nh23423fefe]

Yup wikipedia agrees, temperature is inversely proportional to mass. Surface gravity as well.

https://en.wikipedia.org/wiki/Hawking_radiation#Black_hole_e...

https://en.wikipedia.org/wiki/Surface_gravity#Schwarzschild_...