No this doesn't mean what you think it means. It means roasted cashew nuts to be served on seat 11C. When I was flying Indigo from Bangalore to Delhi, I was asked what I would like to have and when I picked cashew nuts from the options I was given, I was handed this "nutcase"
There were some interesting comments on the previous post. Rian I think you are onto something here. Nutcase will be a great name for men's underwear.