New use for a circular saw

[Dave W]

And you thought they were only for cutting lumber  

Must have been a portable table saw.

[Psycho Bass Guy]

Too bad he wasn't using it to get a band-aid off his neck. 

[Pilgrim]

Stupid knows no bounds.

But if you've never seen a cast cut off, you probably don't know the difference between a circular saw and the oscillating saw used for casts.

Regardless, stupid is really stupid in this case...and probably motivated by trying to save a doctor bill for cutting off the cast.