You don't get it. THAT'S THE WHOLE POINT!!! It's SUPPOSED to piss you off!
They only use it under 5 circumstances:
1. Naive pampered genius who is usually overconfident (typically rich but always in for a rude awakening)
2. Rich popular high-school girl (typically arrogant or bratty)
3. High-class Daughter of a noble (typically has an elitist attitude)
4. Tsundere girls with a princess complex (with some exceptions of course)
5. A villainess in a isekai story about an otome game (Usually, reincarnated into the female antagonist or someone close to them to reform them)

Why do authors still draw characters with drill hair? I know it’s like a trope saying “this character will be annoying” but can’t they just let that fad die already? I see drill hair and I automatically feel irritated before I even know who the character is.