OTP
OTP (noun) means one true pairing: in fandom, the couple a fan is most invested in seeing together. Example: “They have been my OTP since season one.”
How to use OTP
Learner’s notesIn plain EnglishEither a favourite fictional couple, or a single-use security code.
Context separates the two cleanly — fandom talk versus banking and login screens.
Fill the gap
Can you complete this real example?
They have been my _____ since season one.
Etymology
An initialism with two unrelated expansions — "one true pairing" from online fandom, and "one-time password" from computer security.