A way of avoiding temptations or doing something you know will have a bad consequences. Derived from the method used by a man of the lupine persuasion who sees a full moon and knows he's about to transform. He werewolfs himself by locking himself in a room for the safety of himself and others. Werewolfing involves cutting off cutting off communication like turning off your cell phone and computer, staying at home where it is safe and make sure you plenty of distractions like movies or video games. Getting high is a popular way to werewolf yourself.
On the 30 Rock episode, 'When It Rains, It Pours', Tracy Jordan werewolfs himself so he can be there for the birth of his daughter.
Alcoholic #1: Did you ask Sam if he wants to come out and get wasted with us tonight?
Alcoholic #2: I did but he’s werewolfing himself because he has to work at 6am tomorrow.