Call in sick. Get the softest tp possible. Play Angry Birds while you sit on the can. 

Eat something like bananas, make sure to drink plenty of water (although personally I drink cola when I have the problem)

Its your job man.  When you gotta go you gotta go! ( see what I did there? It works on both levels! )  Bring a boatload of tissue and take alot of breaks.  You can only go so much until your empty anyways.

when it happens to me, i dont leave the house.  i think the people i work with would be happier if i didn't shit my pants in school...

The next time you are in HK, go pick up the Thai 5 pagoda powder in any Chinese pharmacy. Take one canister mixed with half a cup of warm water and the next day your runs will go away. You'll fart a lot meantime because of the powder. Works for any stomach problems including over eating.

go to nearest squat toilet, don't worry if hovering position isn't exactly correct (the spray stains on the wall are proof that Chinese get the runs more often than their face will allow them to admit)  and SPRAY IT ALL OUT!

I always bring back an industrial sized supply of immodium A-D (or the local supermarket generic version).  Works a helluva lot better than any local remedy I've tried!

My way is not very sophisticated, rely mostly on my immune system
  * Day off, work at home
  * Drink more water than usual (to compensate for the water loss)

  * A bit of coca-cola (Only cases I drink that kind of thing), for the high sugar content, the water, and the cleaning effect (it's quite acid)
  * I stop eating, just a few soft bread-like cakes if I feel very hungry, to stuff the stomach

And I wait until I poop solid again. Imodium if I somehow really can't afford to wait. Imodium does not cure you, but at least it stops the relentless liquid pooping. Beware the constipation following Imodium usage. As Scan mentions it, good quality paper for whipping yourself makes quite a difference (irritation)

How much did you eat? You have to be empty at some time. I had problems the other way because I eat a lot of a small sweet egg bread.

How do I deal? I run! There's nothing to 'deal'! 

'Faster you go, cleaner (and softer) your undies will be'  F. Zappa

what nuns? Since I've been in China haven't seen any nuns 

buy pepto bismol on taobao.com in the future. Next drink water and buy some meds at your nearest drug store. DON"T eat anything for 3 hours.

The Nescafe coffee has something in it. Stop drinking it for a few days.  When you get empty you can start drinking it again.  I am down to 2 cups in the morning. My Shit is back to normal.

Lots and lots of liquids (water mostly, but a little lemonade also) and absolutely no solid food until at least six hours after it stops. Immodium if you absolutely MUST leave the house - but its murder on the stomach, so i try to avoid it if possible.

蒙脱石散.montmorillonite powder. it's probably the safest and most useful medicine you can buy in a drug store here. it's used in the west just as well. cheap and effective. mix with water, and your salts, trace minerals and fluids should be back in balance. Stock up on it if you eat out a lot!
BTW it isn't a chemical, really: It's powdered stone/clay. It's just that if you chew a rock, you'll prolly need a trip to the dentist instead of the doctor!