You feel like shit when someone say that but don't let it show them how strong you can be.

I can see how these three words can hurt and anger you. I personally have not had them said to me in any manner other than jokingly or a similar such situation, so therefore I cannot offer much other than, try to be brave and show the person who said it how strong you can be. I dont really see what else can be doe except maybe punching them in the face (which will make you feel better for a little while at least) but that is generally frowned upon.. So yeah.

About the poem...
I rated it 4/5
I liked how you kept readers guessing about what the three words were throughout the poem. (: