“You need to shut your stupid mouth” is probably the mildest thing this elderly woman had to say to a surly passenger in this soon-to-be viral video shot on SEPTA. In fact, the altercation between the woman and her young friend is so gritty ‘n real ‘n stuff that it was featured on that internet gossiphole, Gawker. As Penn students forced to use SEPTA to get to Center City or Don Memo (it’s always one or the other), we see this situation on the reg– we all have at least one horrific SEPTA story to share. What’s yours? Tell us in the comments.