I involve the identify of a pop song that be played contained by an insurance commercial?

each section of the the lyrics to the song starts bad with an age like "16 years antediluvian..." then goes through a description of what natural life is like at that age and then jump to another age.

it was sung by a young white mannish pop artist who had a high voice that sounded similar to howie afternoon and dave matthews. It has been at lowest possible 5 years since I heard it.

The commercial showed two teenagers hanging out surrounded by a tree - that's all I can really remember - please help!! this is driving me nuts!! : )
Answers:
Five for aggression

100 years
http://www.youtube.com/watch?v=NmoE8_U-J…


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