Knights getting stabbed with swords through plate armor.
We're re-watching GoT and were at the Brienne/Jaime fight on the bridge, and I was just yelling at the screen. He's in rags and she's in plate, both wielding swords, he doesn't have a snowballs' chance in hell if she protects her head and just tackles him. That's what the fucking armor is for! Coincidentally that also would be way more likely to achieve her goal to subdue but not hurt him.