going top rope comes from wrestling - it means completely demolish or eradicate with vigor -
> Dude1: Did you see Red get in a fight at Shelby's last night?
> Dude2: If you can call it a fight, I guess I did. He went fucking top rope on that twat waffle.
> or
> After a marathon 8 hour Wedding Prep class to satisfy the Catholics, Steve went top rope on a 6 pack to regain his testicles.