Hate to give terrorists a good idea... but...

[dogtag]

this would seem to be a far quieter way of killing
lots of folks than the rather noisy suicide vest route.
Think of something nasty like causing thousands of
New Yorkers to have a sudden and severe case of
diarrear(sp?). That could wreck the sewer system.
You see, I'm not giving them any real nasty ideas,
just one that could give the rest of us a good laugh.

https://nypost.com/2018/02/24/man-wi...et-nyc-hotels/

[bostonbound]

It couldn't happen to a better place.

[JB White]

What you call 'wrecking the sewers' they think of as 'ruining the drinking water'. They just may try it!