When you make plans to get together with someone, and you re-confirm several times only to have them never show up, or they are extremely tardy ultimately screwing up your plans.
I told Rob we were skiing on Friday, Sunday, and Monday. He asked me to get him some lift tix, then he pulled a Manzo, and never showed.
Stai manzo is an expression that has its origins from Italy. Stai manzo is being directly translated as: Stay beef.. But the actual expression is being defined as: calm down.
Victim: I broke my hands and my ass is itching like the devils horns were stuck in it!!
Observer: Stai manzo, nothing wrong with my hands, I can release you from the itchy ass tensions of yours..
Victim: Please do!