I Found a Whistle Lyrics

Lyric discussion by dum2u 

Cover art for I Found a Whistle lyrics by MGMT

Just a wild guess here. Maybe the "whistle" is the authors one true love.

"and when my noose is tied I could blow it and fall down into your arms"

When he feels like the world is going to end, he can go to his love, and they make everything okay.

"Yeah I found a whistle that works every time that's when the trail escapes to nowhere and the flood erases the crime such conviction to paint all the wall with the blood of the young and the faithful and the good"

He found someone who can look past all the stupid things hes done, all of the girls in the past, and all of the hearts he's broken. His love still loves him no matter what.

My Interpretation

This! This is what I was sort of trying to say, earlier. This is what the song's about (imo).