An attempt to contact someone with the same name and country as the person who posted the photo of the footlong sandwich on Subway's Facebook page was not returned on Thursday.
But comments by other Facebook users about the photo ran the gamut from outrage to indifference to amusement. One commenter urged people to "chill out." Another one said she was switching to Quiznos. And one man posted a photo of his foot in a sock next to a Subway sandwich to show it was shorter than a "foot."
"I've never seen so many people in an uproar over an inch. Wow," read one Facebook post. "Let's all head to McDonald's and weigh a Quarter Pounder," suggested another poster.
The Subway footlong photo is just the latest in a string of public relations headaches that were caused by a negative photo or event about a company going viral.
Last year, a Burger King employee tweeted with a picture of someone standing in sneakers on two tubs of uncovered lettuce. Domino's Pizza employees posted a video on YouTube of workers defacing a pizza in 2009. And a KitchenAid employee last year made a disparaging remark about President Obama using the official KitchenAid Twitter account.