Google terms used: "lactose intolerance, Irritable Bowel Syndrome, Crohn's Disease, Celiac Disease, gluten, gluten-free, gluten-free pasta"
Anyone here with any of the problems listed above can be a big help to me here. I know this sounds childish (and like something ridiculous out of "Dumb and Dumber"), and it is, but it's an important plot point for me. I have a character who stupidly decides to exact a sort of revenge on someone she is familiar with by serving him food that she knows is incompatible with his digestive system. I googled it to shit, but of the syndromes/diseases listed above, I couldn't decide which one best fits my criteria for the storyline. If you have any other ideas, feel free to comment with them as well. Basically, I am looking for a combination of a food and a bowel problem that would:
a) For the food, be difficult for the person on the recieving end to tell it was made incorrectly (I looked into gluten-free pasta for this, but couldn't find how similar it appears/feels to regular pasta, and that only works for Celiac anyways)
b) Cause a noticable uncomfortable reaction within 3 hours, preferably sooner
c) Not cause a lot of long-term damage to the victim in question (for the purpose of my character not having the pants sued off of her)
I realize this is a bit of a complex question, I tried to explain it the best that I could. Thanks in advance for the help.
ETA: I think I've settled on using regular milk in a cream soup as opposed to lactaid. Does this sound implausible to anyone?