Definitions by PennieGirl

Walking Petri Dish 

Someone who has had sex with so many people that they are virtually guaranteed to have multiple STD's. Similar to a walking STD.

Me: "Pat and John are walking petri dishes."

Jane: "I know, they're total male sluts."

Walking Petri Dish by PennieGirl August 11, 2005

err 

An interjection that essentially means "What are you talking about?".

Jane: "I really like what you did to your hair."

Me: "Err? I haven't done anything to it."

err by PennieGirl July 2, 2005