text: Dallas: What happened to that photo you sent me, it's disappeared
  Joanna: It's snapchat
  Dallas: I know but I still have the first one you sent me 
  Joanna: I can't see ur photo also. So how can I know? It's good it disappeared :) That's the aim of snapchat
  Dallas: Yes I know but why do I still have the first picture you sent me?
  Joanna: I don't know
  Dallas: Weird
  Joanna: Yeah weird u still have that pic, not that the other one disappeared
  Dallas: Hmm
  Joanna: U mean that photo of my leg? That u can see it? Because I can see it too -.-
  Dallas: Yes that one
  Joanna: So I don't know why
  Dallas: I can only see the one you sent me first
  Joanna: That one with my red skin on my knee?
  Dallas: Yes
  Joanna: Ok. I can't even delete it
  Dallas: Seriously?
  Joanna: So u see :) I can't trust snap chat. It can still save my pics:)
  Dallas: Yeah... :/  true
target: Snapchat saved Joanna's photo and Joanna and Dallas don't know why.