Various knives being scraped against one another. Not the metallic "shing" associated with swords but a good metal scraping. There are several versions in this one file.
The rather elusive razor waveform, as it is commonly called due to its peculiar shape, from the commodore 64's sid chip, acheivable only by activating the outputs of any two waveforms on the oscillator section.
I have never sabotaged someone's car tyres. I was curious and wondered how it may be feeling to puncture a tyre, so i ran a bowie knife in a old wheel i had. It wasn't so easy as i thought, had to use rather strong hand.