Some stocks occasionally experience significant price drops due to shortsighted reasons. When that happens, it presents an excellent opportunity for careful and patient investors to buy the dip.Other times, shares of companies move in the wrong direction for good reasons. In those cases, it is generally best to stay away unless there are good reasons to think the corporation in question can overcome whatever headwinds it is facing.That brings leads to fuboTV (FUBO) and Chegg (CHGG -5.60%), which have signif ...