I drink lemonade, or just get some rehydration powders. I'm not sure you'd want to eat. Dry biscuits or crackers maybe.
Here is a good article that not only gives a guide on what to eat, but what to avoid as well.
When we have diarrhea, we must have some drugs which are for against it, or having the bananas, rices, and carrots that are good for it, but if we are have it seriously, then it's better to go to see a doctor.
more of the same that caused it
The basic BRAT diet
(bananas, rice, applesauce, and toast) is a good start. Here is a quick
guide of what should you eat when you are suffering from Diarrhea :-
you can try anything from the above mentioned !