What does the online catchword Pikachu mean?

The original intention of Pikachu has been answered by the netizens above. I feel that you meant to ask "Come on, Pikachu!" "This sentence has a wide range of uses. It turned out to be a sentence used by Xiao Zhi when he was fighting with a pet in an animation. In online games, when attacking with pets, I also like to use this sentence, which is similar to animation. There are many extended things, but many jokes are used for teasing. Different jokes have slightly different meanings.