The funny name is "Ruide Men'er".
The nickname Red Bull is mainly because the English word for "红" is pronounced "red", which is homophonic to Red (or Red); and the sound of "cow" is "moo..." (also known as "Red Bull"). (People pronounce "men'er...", "men'er...") So after combining them, Red Bull becomes "瑞德门儿", "red哞", "red门儿", "瑞德狠" ....
This meme comes from the Douyin celebrity "Lao Si's Happy Life". Lao Si is a lobby manager in a bathing city, and he will make fun of Red Bull as "Red Bull"...