I have had Kelly Clarkson's song "Life would suck without you" stuck in my head for days.
I knew I had some of the lyrics wrong though so I looked them up:

"Guess this means you’re sorry
You’re standing at my door
Guess this means you take back
What you said before
Like how much you wanted
Anyone but me
Said you’d never come back
But here you are again
Cuz we belong together now
Forever united here somehow
You got a piece of me
And honestly......"

I always sing the last 2 lines as
"You got a piece of pie
With heaven on the side"

rofl!!
What about y'all? What are some lyrics you've butchered?