Also him in the group therapy session admitting he'd previously tried to kill himself over a girl he proposed to rejecting him. When he says he wanted to marry her the other guy laughs and poor shy Billy pretends it's funny too.
Martini breaking the glass window with the basketball and then holding the broken basketball in front of Nurse Ratched asking her to make it well again. She didn't do it.
Cheswick's "I want something done!" rant. Pure Narm to some, but to others, it's just sad to see poor Cheswick freaking out like that.