Shield

[John Cuthber]

1 minute ago, dimreepr said:

Witch!!!

I think you are talking warlocks.

[YaDinghus]

2 minutes ago, John Cuthber said:

That's interesting. Mine went purple.

But it was Sensei  I was referring to.

Oh I know. I just wanted to start the shattered mirror support group and add the curious information of the subsequent color change. Seems to be more widespread than I had assumed at first

 

2 minutes ago, dimreepr said:

4 minutes ago, YaDinghus said:

the shards turned black...

Witch!!!

Shoulda known this would happen when I signed a contract with that devilishly handsome and persuasive [insert preferred gender denominator here] with my blood

[John Cuthber]

On a related note, if you break a half silvered mirror, do you get 3 1/2 years' bad luck?

[YaDinghus]

3 minutes ago, John Cuthber said:

I think you are talking warlocks.

Different name, same charge from THE SPANISH INQUISITION (nobody ever expects them)

[dimreepr]

4 minutes ago, John Cuthber said:

I think you are talking warlocks.

I often do.

[John Cuthber]

My friends have learned to say no when I ask if I can look at their CD collection...

Incidentally, non explosive reactive armour also exists

https://en.wikipedia.org/wiki/Reactive_armour#Non-explosive_and_non-energetic_reactive_armour

and in some way, it actually answers the OP's question about turning the attackers blow against themselves. As the wiki page says

" This is almost the same as the second mechanism that explosive reactive armour uses, but it uses energy from the shaped charge jet rather than from explosives"

 

[mistermack]

A bouncer I used to know used to explain action and reaction to troublemakers in a simple way. 

"If you don't behave, we are going to have one hit each. I hit you, and you hit the floor! "