* Right before Holden leaves Pencey at night, he shouts at the top of his lungs, "Sleep tight, ya morons!" and presumably wakes up the entire floor. Most of the witty narration also qualifies, in a very tragicomic way.
** And after the aforementioned shouting, he stumbles while fleeing down the stairs because of some stray peanut shells and nearly 'breaks [his] crazy neck'.