Scold her son too much until she
grows mad. OR: Mischievious son died and she thought he's still
alive.
sometimes i encounter some doing that while walking. i remember one
auntie was talking loudly and sort of scolding someone "beside" her
while walking along. you know she is like talking to someone beside
her by the way she is pointing and turning her head...
Again... perhaps the same situation,
but more extreme. Perhaps gotta do with the husband. 
2. there was once also after i boarded the bus and found a seat
then an indian old man suddenly just started to talk to me about
michael jackson!!!! kaoz! i quickly changed seat.
A great fan of Michael Jackson. Could
be an old gay attracted to this idol. But then, Michael Jackson
only likes kids. So, he's devasted till he goes mad.
*shrugs*
3. this one more recent at tiong bahru mrt i was inside the mrt
station itself waiting for the train to arrive, then one uncle
approach me ask me to give him 10cent to take mrt !! but what the
hell he already inside liao leh still need money to take
mrt????!?!? but i was wary lah..this kind sure is scamming so i
just reject straight away. but later i think abt it maybe hes
mad.
He probably had bad experience in the
station before. Like losing his 10cents which causes him to miss
the last train and ended up sleeping there overnight and later got
raped by some desperate mad aunties? hehe... who knows? *shrugs*
[/quote]
