that thing of when a white guy starts to look more and more asian as they get older, inspired by the way Led Zeppelin's guitarist Jimmy Page aged into an asian dude
OTP is a perfect pairing between two fictional characters. Klaus and Caroline invented the word OTP.
One True Pairing is a couple so perfect for each other. For example the line that Klaus ended all ships. "He's your first love, I intend to be your last. However, long it takes."
One of the best Hunter x Hunter ships. A combined word from the names of Pariston and Ging. The sexual tension between those two is fatter than Hisoka's ass.
A romantic pairing (whether it be from a video game, movie, book, etc) that is completely implausible and/or bizarre, but people support it anyway, for laughs or otherwise.