This occurs after the Festival of the Winterstar (W25. Chrismas expy) I was taking care of my last minute chores including going over to the beach to re-bait and collect my crab pots. Upon coming back, I find Penny next to the tree that she usually sits in the morning. I guess Pam had too many egg nogs.
LOL, she takes it after her mother. If you haven't realise, after a festival, Pam would walk to her bus at 10PM... sometimes I have no idea if she's an alcoholic or a workaholic...