這個廣告是真的還是假的?

這個攀岩的廣告是真的還是假的?

http://www.ktvu.com/videos/news/citi-rock-climbing-commercial-real-or-not/vFhDm/ 

1. seeing is no longer believing 
2. seeing is believing
3. credit card
4. belt
5. new shoes
6. this can't be real
7. dizzy and sick
8. feet
9. imminent death 
10. Utah
11. camera 
12. not difficult
13. ancient rock
14. top
15. who is that hot girl ?
16. I had a camera on my helmet. 
17. climbing rock without rope
18. song 
19. lyric
20. Somebody let the gate open
21. Swedish diaper commercial
22. baby

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這是什麼廣告?
為什麼 大家要說到這個廣告?
廣告裡的人在做什麼?
你覺得廣告最後好不好笑 ? 為什麼?