There are too many angry and hateful-looking old men walking the streets and/or being bosses in companies. Don't we all know a "bomb" - bitter old man-bitch?
A very attractive woman who is independent and noticeably muscular. At any given moment she will not hesitate to defend herself physically (or mentally). Her capabilities have the power to protect her while breaking you or whoever is testing her. She isn't a people pleaser or a pushover. Either respect the bomb or you'll fear her.