Roses are Red

Roses are red, Tomatoes are redder. I think we both know, I like you better.

Explanation

Experiment

Explain Bear

Listen up, buttercup. The joke is that the person is using the classic "roses are red" line, but they are changing it up to say they like someone better than roses. It's funny because it's a cute and clever way to express affection. Also, you are probably single.