It's spanish for "Go to you room before you get the spankin' of a lifetime" except without the "go to your room" part.
Note: Although pijaso has a 'J' in it, it's pronounced Pee - ha - so
It is used in some areas of Spain, but it is used more often in English. This expression means that someone wants to have lots of sex with you with his tiny dick.
One who paints with poo, usually from their own ass. It involves both the liquid and solid forms of shit. Frequently occuring in hospitals and nursing homes. A bitch to clean up.