Glimmer is getting better with that Axe, but Twilight you’re looking a little Thicc there.

@AaronMk  
exactly!
 

 
It is also important to bear in mind that conflicts between tribes and warriors were far less lethal than we might think today. the unwarranted killing of another between tribes could cause retribution or war. so they would do stuff like that to show feats of daring and skill.
 
but of course you need to take into account the tribes, time, place, war-footing etc.

@Alphadude007  

 
It being a scalping joke aside, this is also something like the better thing she could have done. To the plains tribes of the American west going into a fight was honorable, but it was more honorable to do it hand to hand than with a bow or rifle, but more honorable still to simply approach an enemy and slap them or otherwise physically humiliate them and run away and survive, or to do any number of dangerous things and then live to tell the tale and collect the glories.
 
So really, her running up to and cutting off her tail and taking it as a trophy is higher respect than if she had just clubbed Twilight in the head, according to the practice of counting coup

Could’ve been worse, Twilight, this could be explicit!

@Alphadude007  
A scalped horn work I’d be quite the prize.

Heh… Mare’s leg

Could’ve been worse, Twilight, she could’ve gone for the head!