Definition
a vulgar term used to describe the act of masturbating
手淫；打飛機
He beat off in his room without closing the door.
他在房間裡打飛機，沒有關門。
The scenes in the movie offended some people, as they felt it excessively depicted beating off.
電影中的場景冒犯了一些人，因為他們覺得過度描繪了打飛機。
The term came up in discussions about sexual education for teenagers.
這個詞在討論青少年性教育時被提到。