Here's a fun article by Vicki Santillano about eight famous songs that are badly misunderstood, the lyrics having been brutally wrenched from their context and happily sung by the hoi polloi who are blissfully ignorant of what the songs mean.

My favorite example was "Every Breath You Take", by The Police:

How many people foolishly chose this song for their first dance as newlyweds? I’m not sure why this song is misinterpreted so universally as a love song. Do people listen to lyrics? If someone says to you, “Every game you play, every night you stay, I’ll be watching you,” wouldn’t you be more than a little creeped out? I guess that’s the power of Sting—even his stalker anthems are considered romantic.

Read the whole article here.

I will add just one more example to her list: "No One's Gonna Love You", by Band of Horses. The repeated anthem, "No one's gonna love you more than I do", along with lines like "anything to make you smile", make it sound like a tender tribute to The One You Love. But when you listen to the other lyrics, "we are the ever-living ghost of what once was", or "the whole thing is tumbling down", you realize that the refrain - "No one's gonna love you more than I do" - is actually a sad goodbye to a love now lost, and the singer's conviction that his significant other will never find a love like his.