Hi,
A dinker is a snake you think you can see something different in that you think might be genetically inheritable.
So it's not really one of the established known morphs.
It can be an unusual pattern, colour - anything really. And of course it can turn out to be dom, co-dom, recessive or completely non-inheritable.
If you do a forum search on dinker you will get to see some really intresting looking snakes.
dr del