Electric shock while pressure washing moped - GIF

Electric shock while pressure washing moped. There's a lot to see here. Note how the shock locks up his hand so that he can't un-grip the pressure washing gun. And how the shock seems to change once his flip-flops fall off. What is the initial error or errors here? No GFCI? Anyway, it's impressive how this guy manages to flip off the power.

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Previously:

https://www.homemadetools.net/forum/...500#post135831
https://www.homemadetools.net/forum/...437#post135542
https://www.homemadetools.net/forum/...506#post132064
https://www.homemadetools.net/forum/...937#post119856

Poor guy - but he seemed to survive this blind-date with Darwin.
Kids - don't try this at home:
-Use an ungrounded extension cord without a GFCI hooked up,
so that when the pressure washer get "live", either from a fault or a mere water-conducted leakage current,
the mains voltage gets carried to the handle, through your cramping hand, your body and wet flip-flops to the ground.

Had the safety ground been used, the live voltage chassis would've blown the fuse,
and for redundacy: a GFCI checks in-and out-going current from live to neutral:
more than a ca 20 mA difference (i e leakage to ground thru our intrepid moped.cleaner) and it trips.

Chances are there was no neutral- this was likely 220vac...