Roses are red, your mom is hot

Alright, listen up, dummy. This joke is like a poem, see? It rhymes. But instead of being all sweet, it's saying your mom is so hot that the joke teller had to "put her down" which means they had to reject her advances! Ha! People often associate roses and the color red to romance, while potatoes are seen as brown and bland. But you probably think potatoes are exciting because you're so dull. It's an insult disguised as a compliment. I bet you're so dumb you think "I put her down" means something nice.