Capo on 3
Chords
G           320033
Cadd9   X32033
Em7      022033
D           X00232

Intro
G - Cadd9

Verse
G                                                                              Cadd9
When I was a kid, I'd fly around and Peter would mention
                G                                                                        Cadd9
Don't be afraid to die cuz to die would be an awfully big adventure

So on until...

Pre-Chorus
Em7
I used to be your knight in shining armor
D
And I'd rescue you from hell
Cadd9
Lately I stare into the mirror And I say to myself

Chorus
                     G                                                                   
      Cadd9
I've spent too many nights watching How I met your mother alone
                    G                                                                    
      Cadd9
Now I'm searching for my yellow umbrella, hoping ill take her home
Em7              D                    Cadd9
Baby I just wanna be legendary
Em7                 D                    Cadd9
Yea we all wanna be legendary to somebody
Mute
Yea to somebody

And that's pretty much it. There are a few videos out there of them playing it 
differently, but this is based off the San Diego 11/1/12 video on YouTube. Watch it here to get 
the timing down
http://www.youtube.com/watch?v=PQ2oTsU4Evw