Dean Crook is the guy who helped Ted escape from the feds and found him a new place to grow. He stops by from time to time asking for weed in exchange for XP. He also is the one who holds the keys to the locker room. If you don't have enough weed, or don't want to give him weed in exchange for XP, you can just tell him you don't have enough. It will impact the respect meter, but otherwise, there are no other adverse reactions.