Wow, you guys are good! Thank you much, everybody. Great renditions, I liked them all.
So far, I've only seen "θα'πρεπε να το ξέρει" like Zaz suggested, but didn't think (δε μού 'κοψε!) of using "κόβει" too. That's a cool one, Aorati Melani.
And, needless to say, Nickel's "δεν κάνω το λάθος" is...