Attack Eyebrows

"Excuse me, may eyebrows your wiki, if you know what I mean?"
The shocking reveal of Malcolm Tucker: The Dalek Fucker
GIVE ME YOUR COAT

Attack Eyebrows are a part of the anatomy possessed only by the Twelfth Doctor, much like The Capaldick.

Story

The Doctor first discovered he had attack eyebrows in Deep Breath. Upon realising this, he immediately used them to slaughter a tramp and steal his coat.

Trivia

Attack Eyebrows is also the name of Doctor and The Whos second album.