If it fits

He had a very bad case of the feels and decided it was best just to stuff his face in the box

It's just a little napkitten

I remember my cat did something like this. My sister had one of those boxes and was using it to store tiny clay bricks she was making so she could build a castle. My cat stuck her head into the box just like the one in this picture, and when the bricks stared to pummel her head as she shook her head around to try to shake the box off she freaked out and started running around blindly slamming into things until we caught her and took the box off. It was hilarious.

He needed tissues for his issues.