Maltese slang for "Unbelievable" in a sense that you go fucked over when you were least expecting it.
Pronounced 'Prroooooooosett'
A door to door rug salesman was asked by a customer if he could come back next weekend when should could pay in full, and leave the rugs behind.
He comes back the following weekend
Customer: " who are you "
Rug salesman: " I'm here to collect the payment for the rugs "
Customer " I've never seen you before in my life "
Rug salesman: (bows forward and yells) " PROSETT! "