Before anything else, a warning: Guys, if you plan on stomping on lettuce at the fast food chain you work at, don't taunt everyone else or flaunt that fact by posting a photo of yourself doing it on 4chan. But if you feel like the need to take a picture and share your stupidity with a bunch of random strangers on the Internet, then definitely remember to strip the GPS data from your image files before uploading them.
Otherwise, don't do it, because you're going to end up screwing yourself. (Although something's probably already wrong with you. You are, after all, stomping on lettuce.)
Nobody probably warned this not-so-smart Burger King employee because he did everything that we explicitly warned all of you not to do earlier. He put his feet into lettuce containers, took a picture, and posted it on 4chan with a caption that went: "This is the lettuce you eat at Burger King."
You can expect the usual reactions from amusement to outrage from 4channers, but some of the smarter geeks analyzed the GPS data from the picture and figured out where the stunt took place a mere fifteen minutes later.
To make a long story short, they called the Burger King joint, who subsequently fired three employees over the incident. (I know, you're probably thinking, three? It took three people to take one picture? Go figure.)
This is pretty similar to what happened with an Anonymous hacker who got busted when he boasted about one of his hacks by posting a picture of his boobalicious girlfriend.
The moral of the story is.. Don't do crazy stuff. If you really want to, then don't take picture of it. But if you must, then don't post it on the Internet--unless you don't know what you're doing.