Wendy's fast food chain might be named after a sweet little girl, but don't be fooled by that seemingly innocent exterior. Beneath that sign lurks a world of sass, as Twitter users everywhere have recently been discovering. The fast food restaurant is well known for its hamburgers and chicken sandwiches, but they've also started to serve up double helpings of shut the hell up to anybody brave enough to take them on via Twitter. Check out this funny list of tweets compiled by Bored Panda to see what we mean. The moral of this story? Don't mess with Wendy's!