How about, just coming out of the Operation Theatre after a
major back operation (Four-level Fusion and more), being pushed
into the ICU for close observation, and then refusing to go to
sleep and recuperate but rather, spend the next few hours keeping
awake, asking the nurse every 15 mins for the time, repeating the
same questions again and again just to talk and just because he's
bored and there's no freakin' TV in the ICU but of course, you're
supposed to rest after a major op, you idiot!!!
After about five hours of that non-stop stupid chatter, I almost
lost it. I politely told him that I'm "concerned" about what
might appear to be his increasing level of confusion because it
might be a side effect of the anaesthesia so I'm going to ask him a
few of the same questions he's been asking me repeatedly and which
he should already know the answers to, just to see if his brain's
been messed up in some way. He managed to answer everything
correctly, so I told him, "Strange, you know the answer to all your
questions already... I wonder why you keep repeating them. Oh
well, at least, it's not some brain injury!" *sweet
smile...
He didn't know whether to smile back, or feel insulted.
But he did shut up... for the next half
hour only. 
Update on this same man... a combination of him refusing to rest
for the next three days post-op, the morphine in his system, and
possibly his underlying psychological problem, made him extremely
confused and agitated by Day 3. He apparently squirmed and
tried to get out of bed (possibly doing much harm to his
just-operated-on back), tried to yank out all his tubes, including
his own urinary catheter, which was somehow reinserted wrongly by
the nurse, ending up in his prostate and draining out fresh blood
in the process 
!!!), finally had to call in a Urologist to reinsert
the violently yanked-out urinary catheter, and he became psychotic,
hallucinating and not making much sense. As a result, in an
attempt to prevent him from hurting himself further, we had to give
him Haloperidol, which is a psychotic meds and acts as a
sedative. 
Jia Lat! Luckily he's not a young steed liao cause I'm
sure his balls probably suffered damage liao.
