Why Won't Donald Trump Tell the Truth About His Pens?

Earlier today, Donald Trump tweeted out several photos of former Breitbart reporter Michelle Fields in the seconds before she was manhandled by his campaign manager , Corey Lewandowski. In the tweet, Trump appeared dismayed and confused at the mystery object in Fields' hand. There's just one problem with Trump's account: He not only knows what the device is--he has used one on multiple occasions.