Here's what you do:
1. Go to > Advanced > Show Debug Settings: type in AdminMenu and set it to TRUE
2. Click Advanced > Show Develop Menu
3. Click Develop > Show Admin Menu
Now, please use this power responsibly. Stay out of private skyboxes, work studios, etc. Use it to move faster than walking and to shop high walls of merchandise. Don't be a jerk and ruin it for everyone else. Please.