Y'all are wimps. I've had diagnosed IBS and IBD since I was 14 years old and I can still eat McRibs without an issue. There's far "fresher" stuff (like Shitpotle) that fucks me up every single time and yet McRibs, or anything from McD's has never caused a flare up. 
Got another one on the way home last night.

Got another one on the way home last night.




Plus 1 on the mayo mention.