Angle grinder vs. angle grinder - GIF

Angle grinder vs. angle grinder.

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Previously:

Angle grinder art - GIF
Barber gives haircut with angle grinder - video
Grinder cutting disc shoots into man's stomach - GIF
Grinder disc lodged in safety glasses - GIF
Wall chaser from angle grinder - video

Why? Just to waste the cutters?

No, it goes much shallower than that. A need for constant stimulation or entertainment of some sort. A lot of it presents as stupidity such as this.