A.G.
I would give him the choice to wear diapers or the use potty. If he says he still want to wear the big boy pants then he needs to use the potty. if he consistently refuses the potty take the big boy pants away out of his sight. tell him that they are only for people who use the potty! which is totally true! Tell him he won't get the big boy pants back until he uses the potty. Give him pull ups. Once he uses potty consistently THEN the big boy pants come out again. good luck! don't make it a power struggle just state the facts- underwear is for people who use potty diapers are for people who don't. you don't use the potty therfore you wear diaper. Now he will fight you don't give in!