These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
In Sparks Fly, the lyrics of Beautiful Mess and What Are You Waiting For lyrics have more adult connotations.
The entire High Maintenance album could be Miranda's most defining example for this trope. The highly-saccharine Avril-penned song Dancing Crazy; her punk side for High Maintenance; and of course, the context of Sayonara complete with a sexy Title Drop purr.
High Maintenance elicited reactions just for the lyric "kick a few assess".
The Woobie: Arguably so after that crash that left her to end her tour prematurely.
There is an amazing amount of hate on tumblr and twitter, often involving crude photoshopping and various insults, this started up after One Direction guest starred on her shown and someone invented a rumour saying she disliked one of the boys.