I don't know if it stumps every model, but I saw some funny tweets asking ChatGPT something like "Is Al Pacino in Heat?" (asking if some actor or actress in the film "Heat") - and it confirms it knows this actor, but says that "in heat" refers to something about the female reproductive cycle - so, no, they are not in heat.

I believe it was GoogleAI in search but it was worse than that. Some asked it if Angelina Jolie was in heat. The tone started kind of insulting like the user was a sexist idiot for thinking human women go into heat like animals, then went back and forth saying she is still fertile at her age and also that her ovaries had been removed. It was funny because it managed to be arrogant, insulting, kind of creepy and gross and logically inconsistent while not even answering the question.

Angelina Jolie was not in Heat (1995). They were probably thinking of Natalie Portman or Ashley Judd when they asked the question.