What does a double chin look like?

I'm so confused.. how does a double chin look like?
I know I asked before.. and I was reassured that I don't have one..
but my sisters say I do..
So do I have one?!
And how does it look like?

no you dont I looked at all your pics and you dont soo tell them to stop
also its a fat layer under you chin like if you go down by your neck and pinch fat and your able to see it to

yeah you really don't have one so don't worry about it.
but fyi, double chins can be cute:]

double chins can't be cute!
eww