Really weird secret (spoilers)

In chapter 5, if you go back to the Mike room in castle town and walk through the wall with the buggy animation, you can find this room...

what is this???????

You can press the left button to bring the happiness back to 100, but letting it go to the negatives makes the music slow down and the cat gets really angry

Also the bomb on the right summons another cat for some reason??

I'm at such a loss for words :plue:

I think it may be a debug room? Or smth!?

What the heck
I didn't know about this
This is such a tricky Tony thing to do

Yeah it seems I'm one of the very few ones who actually remembered that there was a secret door there