zingay Uncategorized October 20, 2018 1 Minute tilthat: TIL: The expression ‘mad as a hatter’ is based from the real-life behavior of hatters from the 17th century. It wasn’t until 1941 that hatters discovered that the mercury they used to make hats was poisoning them and making them insane. via ift.tt Share this: Share on X (Opens in new window) X Share on Facebook (Opens in new window) Facebook Like Loading... Related Published by zingay View all posts by zingay Published October 20, 2018