look up any word, like donkey punch:

1 definition by L. Sosodef

From the movie "Oldboy" based from the Japanese Manga of the same name. Definition: "To have sex with your daughter, and you don't even know it while cutting your tongue out and getting hypnotized thinking your daughter is your lover."
You sicko! You are an oldboy!
by L. Sosodef April 08, 2005