Senpai means Teacher or Mentor in
Japanese. The word is most commonly used by annoying as fuck weeaboos, making many
people cringe when said out loud]
Japanese
School Student: "Good
morning Senpai"
Filthy
Weeaboo Casual: "NOTICE ME SENPAI NOTICE MEEEE"
(Everyone within a hundred foot radius begins to speed walk in the opposite direction)