MacBook Pro :: Outer Rubber Insulation For The Power Supply Cord?

I recently got a new macbook pro (thanks to Apple's great customer care/Customer Replacement Unit policy), and two days later, it got stuck under a moving chair, which peeled off the outer rubber insulation for the power supply cord. And a beautiful thing happened I used to notice that the magsafe power adapter would slip out when i was moving my macbook around from place to place a little bit too easily. Then I put 1 1/2 inches of electric tape about a centimeter away from the actual magsafe-macbook port, and the addition added just a little bit of resilience because of some sort of physics i can't explain. so if you want your magsafe to be a little bit stronger, but still pull out if you move it too hard, just add an inch of electrical tape to the end. works like a charm!