Lyric discussion by Reckonir 

Cover art for Take Off Your Sunglasses lyrics by Ezra Furman and the Harpoons

Ahhhh I love this song! The singing is so different. Sorry for the rant.

Anyway, I think this song is about a man, afraid to love and believe things are good for fear of being hurt. People often talk about rose-colored glasses through which one would see the world as better than it actually is, whereas if you looked through sunglasses you would see everything darker and worse than in reality.

So when his girlfriend leaves him to go to Colorado, even though it's innocent and just a family vacation, he feels left alone and dejected. She tries to cheer him up and calls him, in the middle of the night and the middle of the day, to tell him she loves him, but he just feels that she doesn't really mean it. After all, everyone loves each other these days. He feels unworthy.

She wants him to stop being so negative, but he can't and doesn't want to take off his sunglasses because he doesn't want her to end up hurting him ("the sun is bright i need my sunglasses").

As for the last line, I don't think taking off the shoelaces is a direct metaphor for any action, but maybe they represent commitment. He's too afraid to love so she goes ahead and commits ("So she took off her shoelaces") and shows him that she is for real and he shouldn't be afraid.