Definitions:
Dan: Someone that black belt level
Darn: The sound uttered by the black belt realizes the instructor will now strike harder and more often
Damn: The sound uttered by the black belt's partner, it's his turn now!
Best 5 inventions in probably the world...
5. ABC gum, takes the boring part out of the equation and if you're lucky there might be some flavor left
4. Nailed boards, they already have nails thus the hard work is already done
3. Water-proof towel, now you never have a wet towel
2. Peddle powered wheel chair, it's definitely better than your average wheel chair...
1. windows for a submarine, now everyone can look outside and if you want you can even touch the fish (just open it)