Lyric discussion by LaBradford22 

Cover art for Tunnel Of Love lyrics by Bruce Springsteen

Blue Monkey nails it.

This is a brilliant song that uses an old amusement park ride as a metaphor for the challenges and struggles of modern day marriage.

The only one not mentioned yet that I've seen is the reference to the crazy mirror. The mirror room on this ride had a bunch of large, curvy mirrors that simultaneously magnified and distorted your image and the image of anyone or anything else in the mirror. Isn't marriage the same way? Doesn't it reveal every odd quirk, every imperfection, every failure, every human weakness, in the worst possible light? Aren't these things put under such a microscope that you wonder how anyone makes it through? That's the "crazy mirror showing us both in 5-D".