Whether they're poetic and profound or just entertainingly ridiculous, similes in lyrics are great. Here's two to start us off:
"Why's everybody looking at me like there's something fundamentally wrong? Like I'm a southern bird that stayed north too long"
Smog – Palimpsest
"We passed very fast, like ships in the night, or cars in a contraflow system"
Billy Bragg – From A Vauxhall Velox
Now you go. And don't forget to say which song they're from.