Isn't that called "Castling into mate?" That is if Black had just castled. I had to teach myself chess and the first book I purchased on chess only told how to castle and none of the weaknesses of it. So I saw many such mates until I found some books in the public library to help me. Of course, I remembered those defeats better than what I learned in the books. I hope I have anyway.
The first time I was mated after castling, that I remember, was a back-rank-mate. (I like to call it the chamber mate better.) I still get caught in it once in a while. I just get too engrossed in what I am doing and take too many chances with my plan of attack and wait too long to move one of the pawns for the King's escape route.
The worse part in castling