"If you dont forward this we will just see how conceited you really are."
Conceited - Holding or characterized by an unduly high opinion of oneself; vain.
So - if "you" don't forward someone else's pompous holier-than-thou drivel, you have false pride and an exaggerated sense of self-importance..... I don't think so, it's not even vaguely logical, especially comparing one person who may come home with a skinny latte to another who may come home in a body-bag to do so. That's just sad, and I hope vets and current service men and women, and the shades of all those who died in wars over the years forgive the people who sent it to you in the first place, especially with 31st May being Memorial Day in the USA.