Joanna Collin means in slang: Joanna Collin are a breed of ***** most often found in wealthy areas with lots of money and mummy/daddy. Their rival, Erin Morrison-breeding Joanna Collins are a bit more reserved and tend to look at other people. You will have to tell jokes or show money to catch wild Joanna Collin. She is likely to tell you the truth or get you money. Be aware that her staring stare can make many people numb. (in Slang Dictionary, added by Aleah Manning)