Doggerels and Poems

Recently, I was involved in a heated, passionate, steamy, sultry...debate about what is a poem and what is a doggerel. I don't want to name any names, but Laurel claimed that Dr. Seuss's creations were doggerel and not poetry. I thought long and hard after on what makes a doggerel and what makes a poem, and I realized--it had all had to do with the TITLE!!! The title of the literary piece makes all the difference. As illustrated below.

I've figured it out. Emily Dickinson, Robert Frost, et al can go suck it.

Be my valentine?

Roses are red or other colors,
Violets are violet,
This poem doesn't really rhyme,
And it doesn't really have meter either so it kinda sucks