Back in high school (when I was still lame enough to do magic tricks) I had one where you would pierce your arm with a huge needle. The trick was supposedly that you would do it without harming yourself. The real punchline though was that the needle hat a hidden compartment with fake blood so you could pretend the trick had gone wrong and blood was oozing out of the punctuation wounds. A mechanism like that would go well with this nail trick.
… I´m probably gonna click that video … why don´t I know better …
Edit: Watched it. “Kurwa” indeed.
