Soaking a tampon in vodka and then... re-inserting it somehow... is supposed to produce the "ultimate body shot" -- a fast, intense buzz (the alcohol is allegedly absorbed more quickly than by mouth), with no tell-tale alcohol breath for mom or the police to detect.
I first heard about this trend a couple of years ago from another mother: She said her teenage daughter had heard about it from one of her friends, who'd heard that another girl they kinda knew had done it, and OMG how gross was that?
I was repulsed but credulous. After all, you have to credit teenagers with this: They are Nobel-level geniuses when it comes to figuring out stupid things to do, especially stupid things involving booze.
The more I Google searched, however, the more I couldn't find a single article verifying that the "vodka-soaked tampon" actually worked. Grimly, I realized there was only one way to settle the mystery. I couldn't assign it to someone else (just imagine trying to pitch that to a writer!). In the interests of science and parents everywhere, I decided that I would have to test the rumour myself.