mi prendoin giro
literally "you take me for a tour", but means "you're pulling my leg".
The other day, I got all worried because I saw a sign announcing that all regional and interregional trains on the Milano-Genova line were going to be cancelled for a year! This is bad, b/c it essentially means that I wouldn't be able to spend evenings in Milano...
So after a week or two of worry, I finally figured out that my leg was, in fact, being pulled. sigh.... at least the 00h27 train still runs!