you say tomato, I say tomato; same thing, different name
A humorous phrase used when two people refer to the same thing by different names, based on a pun about the German poet Goethe's name being pronounced differently.
"Is that pasta?" "No, it's spaghetti." "You say tomato, I say tomato, huh."
A humorous verse attributed to 斎藤緑雨, playing on the competing Japanese renderings ギョエテ and ゲーテ for Goethe’s name: 「ギョエテとは俺のことかとゲーテ言い」.