Title of 1980 hit record by The Vapors, with a rhythm said to be suitable for masturbation. Title is a reference to the contorted face typical of a guy about to blow his load after a good tommy. The lyrics apparently tell the story of a guy in jail wanking over a picture of his girl.
The act of a male trying to perform fellatio (oral sex) on himself. The phrase refers the facial expression made during this act.
While Jon was masturbating, he remembered the pleasure he had recieved from his first blow job, so he bent down and tried to suck on his own cock, and with all of his might, he started turning japanese.