Shelly was the older sister of stan marsh. She was kinda an asshole to him most of the time, but deep down, she really cared about her baby brother...one day, their mother Sharon told Shelly to clean out Stan's room and grab some of his dirty clothes. While she's there, she finds a few bottles of alcohol in his third drawer..Stan walks in, and she closes and locks the door behind him.

Shelly: Care to explain this, turd? holds up the bottle