Think your tuna on wheat is innocent? Think again. GlobalPost describes five deadly sandwiches throughout history.
The President has no idea how much danger he's in: US President Barack Obama eats a 'medianoche' sandwich while eating lunch at Kasalta Bakery during a visit to San Juan, Puerto Rico, June 14, 2011. (Saul Loeb/AFP/Getty Images)
Sewing needles have been found in in-flight sandwiches on Delta and now, on Air Canada, prompting a wave of public suspicion towards our most dearly-beloved lunchtime dish. But what about other dangerous sammiches in human history? A non-exhaustive list follows.