The original scene features Rudolf saying the above line while making an intimidating expression with shaded eyes and one hand propped under her right cheek (ref., top left panel).
The above line and scene are frequently memed among the Japanese and Chinese Umamusume fanbase. Often, the last word will be swapped out, forming a "Don't look down on X" snowclone.
Original line and translations
中央を無礼るなよ Original Japanese
不要在中央面前无礼/不要在中央面前無禮 Memetic Chinese translation (simp. and trad.)
Don't make light of Central English, fits the original context better.
Don't look down on Central English, fits most memed examples better.
