Dreamcrushed 

To have a teacher destroy your work for minor errors.

When Jamie left out the "+c" at the end of his antiderivative, he was immediately dreamcrushed by his math teacher.

Dreamcrushed by Winstoned January 2, 2012

Dreamcrusher

Someone who tells you that you won't ever be able to do something.

Even though I'm not able to go to the I'm Still Music Tour by Lil' Wayne, I still like to hope that I can.
Victoria: You'll never go to his concert.
Ell: Fuck. You. Dreamcrusher. I don't do that to you.

Dreamcrusher by Samieee March 3, 2011