I am not at all surprised that the Vulgar Beanies from Indcsn are completely sold out. These beanies feature slogans telling people to kill themselves and F off, two sentiments which are surprisingly common, even during the holiday season.
The Vulgar Beanies from Indcsn are perfect because they let you say what you cannot say. For some reason, it feels morally wrong to tell someone to F off during the holiday season. Now you can simply point to your beanie; if they don't get the hint, they're beneath your contempt.