Katy Perry's 'Dark Horse' is about being careful what you wish for since you just might get it. Be prepared for the consequence.

And if you take things, like her heart, lightly, she will make you regret it. Hell hath no fury like a Katy scorned.

It has a fitting title, since it's a song about the darkness of the heart and of love. Perry invites a lover into her heart of darkness, but it's not fun and games. It's war... Or at least it could be.

She warns that once he does embark on this love journey, he needs to go all in, since that is what she is doing.

We're not gonna lie -- the song has a psycho girlfriend vibe, but for all the right reasons.

To be fair, Perry does issue the advance warning. She is worth it, but her active participant needs to make sure this is not a game and not a dalliance.

"I knew you were / You were gonna come to me / And here you are / But you better choose carefully / ‘Cause I, I’m capable of anything / Of anything and everything."

Don't mess around with love – it's like black magic and karma, and being capricious can come back to haunt you.

"She eats your heart out / Like Jeffrey Dahmer / Be careful / Try not to lead her on / Shawty’s heart was on steroids / Cause her love was so strong / You may fall in love / When you meet her / If you get the chance you better keep her / She's sweet as pie but if you break her heart / She'll turn cold as a freezer."

That's Juicy J's part. It may sound like he is painting a picture of a psycho. But really, is it wrong for a girl who is misled or led on or wronged to be pissed afterwards? No, that's normal. Is it wrong for a woman to love hard and with intense passion, and to have that same fire when scorned? No, it's not.

"So you wanna play with magic / Boy, you should know what you're falling for / Baby do you dare to do this / Cause I’m coming at you like a dark horse / Are you ready for, ready for / A perfect storm, perfect storm / Cause once you’re mine, once you’re mine / There’s no going back."

Again, she is being clear. This is not a game. This is love. This is her heart. There is a lot at stake on a cellular level so treat it with love, respect, and care. And everything will be fun. Big risk, big reward. So don't f—k it up.

Listen to Katy Perry, 'Dark Horse' Feat. Juicy J