daggnix - A person who gives everything but ends up with nothing. They

A person who gives everything but ends up with nothing. They're like a kid who shares their last candy and gets nothing in return.

I gave my last $10 to my brother. Now I'm broke and he's still rich. I'm a daggnix.

I tried to be the cool one. Now I'm the awkward one. I'm a daggnix.

I tried to help my friend. Now I'm stuck with their problems. I'm a daggnix.