A one eyed smiley, used by only the awesomest people to replace the mainstream two eyed smiley. Was made to honour all the people with one eye.
Brandon: I just found out that I'm pregnant .D
Drake: Hahaha that's funny. You can't get pregnant, you're a guy!
Brandon: I actually was going to talk to you about that...
Drake: ...
This smiley can be viewed both ways, either as a :D or a D:. It should be used in situations that could be perceived two ways, such as happy/sad, or funny/non-funny