Starfire didn’t seem to understand the humor. She thought that whatever point he was trying to get across must have been some Earth thing. That is if that was where he came from. His whole “free targets” thing, even though the target in question was a decoy, she found kind of odd. 

Peyton in a way talked about how unlikeable Romulus was so she said, “Yes, he is a Zolworg Tuback Plxing Zardbarker” Whether Peyton knew it or not, Starfire was insulting Romulus in her native tongue, Tamaranean.