noun
masturbation fantasy person; onapet
Vulgar slang; refers to a person one fantasizes about while masturbating. Derived from オナニー (masturbation) + ペット (pet).
See also: オナニー
彼はクラスメートをオナペットにしているらしい。
He apparently uses a classmate as his masturbation fantasy.
オナニー means 'masturbation'; オナペット specifically refers to the person fantasized about during the act.
Wasei-eigo blend of オナニー (masturbation) and ペット (pet), literally 'masturbation pet'.