What happens if you drink bleach (or something similar)?

No, I’m not considering doing this, I am just curious as to what happens. You always see the label “DO NOT DRINK” on common household products. How much would you have to drink for it to be harmful? What about fatal? What happens to the body when you drink that amount of whatever chemical?

http://health.allrefer.com/health/bleach-info.html

Bleach probably won’t kill you, but will be extremely unpleasent

From here

If you want data on any other chemicals, just google for the name followed by MSDS and the answer will appear as if by magic.