Yellowjackets can sting the fuck out of you multiple times, too. I got stung by two of them last summer and then they somehow got inside my t-shirt and stung me a bunch more times before I made it inside and flung my shirt off. After waiting half an hour for the pain to subside, I picked up my t-shirt to put it back on and the two yellowjackets fell out of it, still alive. Fortunately they were as surprised as I was and I was able to stomp them before they stung me again.

And in this particular case, the soft lining of the esophagus wouldn't necessarily get the stinger stuck.

One of the my childhood friend's dad swallowed a bee once. He nearly died, and frequently said it was the worst summer of his life.