According to Judge Zloch, you get your case summarily dismissed.
According to the 11th Circuit, that's a tad harsh:
On January 6, 2012, Courtesy Boat Rentals & Yacht Charters (“Courtesy”) filed a motion to dismiss Boone’s complaint. Local Rule 7(1)(c) required Boone to respond to the motion by January 23, 2012. Boone failed to file his response until February 22, 2012. The case proceeded for over three months with the court referring the case to mediation, setting the date for a pre-trial conference, and providing trial instructions. Then, without warning, the court dismissed Boone’s action with prejudice because he failed to respond to the motion to dismiss within seventeen days as required by Local Rule 7(1)(C). Boone moved the court for relief from the judgment due to excusable neglect and explained that he had made a simple calendaring error. The court summarily denied Boone’s motion.Cue the heartstrings, plebes:
Parties must meet deadlines in order to preserve the efficiency of our busy district courts. And yet, despite an abundance of care, mistakes will no doubt occur for “to err is human.” The drastic sanction of dismissing a case with prejudice is only proper where “there is a clear record of delay or willful contempt and a finding that lesser sanctions would not suffice.” Kilgo v. Ricks, 983 F.2d 189, 193 (11th Cir. 1993) (citation omitted).I agree. Yes you have to meet deadlines but meesteaks due happon.