7. Terry Moore: "How to tie your shoes."

http://www.ted.com/talks/terry_moore_how_to_tie_your_shoes.html

1) SAVVY (n) - practical knowledge and ability:
She hasn't got much savvy.
business savvy

2. LUDICROUS (adj) - stupid or unreasonable and deserving to be laughed at:
a ludicrous idea/suggestion
He looked ludicrous in that suit!

3. A STRAND (n) - a thin thread of sth, often one of a few, twisted around each other to make a string or rope
a strand of cotton
She tucked a loose strand of hair behind her ears.

4. A CORD (n) - a rope or string made of twisted threads:
Where's the cord that ties back the curtains?
Have you got some cord that I can tie this parcel up with?

5. A LOOP (n) - the curved shape made when sth long and thin bends until one part of it nearly touches or crosses another part of it:
The tape ran in a continuous loop, repeating the same songs over and over.
a loop of string, the loop of the river