This is what
Feels Like 99 Looks Like.

Note open mouth, tank top and use of headband (because even small hair is too much hair today).
Desert creatures like kitties respond to the heat by stretching out on the floor, thus minimizing energy output and maximizing contact with a cool surface. Note partial belly exposure to capture any passing breezes.

Further to this strategy, the under-bed stretch is popular for the shade it offers and, as Ginger demonstrates below, the ability to capture any cool air descending along the walls.

(Yes, that is a chewed swab in the foreground. Sometimes, we use clean swabs as toys. Cheaper than those fur mice.)
Some prefer the under-middle-bed strategy. This may be more to do with the fact that the vacuum made an earlier appearance than the heat. (Note my bathing suit top in the foreground. How did that get there? I don't know. Why is it there? It has ties which are preferred cat entertainments.)

But some clever beastinas take advantage of the heat-induced sloth of their housemates and enjoy their solitary time at the food tray.

It sure is hot.