According to the TSA's blog, "She had to explain to Puerto Rico Port Authority Police, FBI, and TSA that she was just joking."
The most recent "Week in Review" — the TSA's roundup of the banned and strange items found at security checkpoints around the country — noted officers found a live smoke grenade under the lining of a passenger's carry-on bag at Washington Dulles airport.
The week's haul also included 21 firearms (all but one were loaded), and a flare gun with six flares.