Brian Zin Skeptics Stack Exchange • Recommends
On “Can a lightbulb once inserted into your mouth be safely removed?”
While it's a bad idea to put fragile glass objects in your mouth, the primary assertion here is clearly false.
First of all, there are at least five different YouTube videos where people try it out and have no problems. link to this video is one that includes various sizes and shapes.
Secondly, if this were possible, it is likely that cases would appear in the medical literature, but they don't. It is not difficult to find documented cases of light bulbs stuck in people's rectums, of children swallowing small LEDs and so on. Here is a dataset of nearly 2000 light-bulb related mouth injuries presented at hospitals. While only some descriptions are available and all of them are brief, they are just…