"WTF?!?! You realize that just means a senior or upperclassman right?"
"Shut up! Don't disrespect my relationship with my beloved senpai!"
"NO, YOU SHUT UP CRINGE ANIME KID!"
senpai is used for a term in japanese and it is used for sex talk and if you call someone senpai you must suck their dick for a day straight until they fill your mouth with cum and makes you feel good and also furry sex