Would putting speed bumps on NASCAR tracks make the sport safer?
Yes they do. I had one go off on me once. I bought a shirt with two ink tags on it. The clerk removed one but not the other so the alarm went off. Last saturday I set one off because I got to close to the door.
Dips because it works out both your triceps and lats. To increase the intensity of the dip, try with one leg up. To go even further, use two chairs your hands on one and feet on the other so that you have a deeper range of motion. While you can increase the amount of weight you use for skullcrushers/tricep extensions, it's an isolation move that only works out one muscle at a time. Compound moves are more efficient, time-wise.
