The trick has been impressing crowds since Old Testament days; the stunt originated in India over 4000 years ago, making it one of the earliest and most impressive things to come out of the subcontinent.
So, they use a trick sword made out of taffy or something, right?
Nope, you can totally do it with a real sword. As it turns out, the only trick to deep-throating a sword is overcoming your gag reflex. When something enters our esophagus, it contracts to push it down toward the stomach. This reaction occurs automatically, whether we are downing a burger and fries or 22 inches of forged steel.
"I think I see the problem right here."