Probably nothing, besides a few thousand sewer busts, lots of stincky gloop of everything that, well you get the picture. Don't you? If not, sorry. I hope that this answers your question. If not, sorry. Do not try this unless you live on high ground. The people on the dark side would lose some sleep. The earth would suddenly be deafened by a great noise: half the population of the earth would yell at the other half "be sure to put the seat down!" I don't think anything would happen, except for the momentary drop in water pressure as the toilets refilled. BTW, not every culture uses toilets that flush.
Everyone will die.
everyone would die
Earth will have day on one side and night on the other and everyone will die.
Since everyone and everything on Earth does so anyway, nothing.
Everyone would die.
Lefty's would rule the earth.
Everyone on earth would drown.
everyone would DIE! surely..
Toilets to flush clockwise in the north. However, it is not due to the rotation of the earth as many people believe. It is because of the way water is jetted into them.
all girls places. Such as toilets marked "ladies"
We would need 4-5 earth`s to live on !
Nothing will happen in 2012! everyone said the world was going to end in 2000 but it didnt dont worry ! :) We'll be fine