The rage and profanity you let out of your mouth when someone exits your room and closes your door to the point where it's just ALMOST closed, but it ends up staying open a crack.
I get PanDOORa's Box Syndrome when just after my mom gets in my room and "closes my door", and I have to take a break from wanking to ensure maximum security.
A trip to a grocery store, convenience store, or gas station for the sole purpose of buying an excessive amount of junk food and sugary drinks, usually with friends. A chud run often happens late at night and ends with everyone involved hating themselves afterwards.