Wear them for a day. At lunchtime go find a public place and masturbate withour removing any clothes. Cum into the panties. You must wear them as they are for two more days. At least twice a day you must either cum into them or cum in them. Never take them off or clean them. If you're feeling brave you must also pee without taking them off for three days, you may poo without them though. At the end of the three days put them in your mouth and suck on them for half an hour. Then jack off and cum without the panties.