Holden is outraged when he walks through the Egyptian tomb in the museum because (a) the two boys who are with him run out; (b) the guard makes him leave because it´s closing time; (c) he finds another obscene word.

(c) he finds another obscene word

I was the only one left in the tomb then. I sort of liked it, in a way. It was so nice and peaceful. Then, all of a sudden, you'd never guess what I saw on the wall. Another "Fuck you." It was written with a red crayon or something, right under the glass part of the wall, under the stones.