The name says it all: Fast Food: Ads vs. Reality. I won't include an image, just see for yourself.
Still not sure? OK, I'll give you a preview:
The real Arby's Beef 'n Cheddar looks like a human head that melted in a grease fire. The real KFC Famous Bowl resembles one of those 70s' era dog foods where you add water for "gravy" (oh, and the dog got sick too), the real Subway Turkey Breast and Ham Sub reminds me of awful days in the middle school lunch room, and the real Wendy's Southwest Taco Salad evokes something from a Sam Peckinpah film.