揩油 (kāi yóu) — to freeload; to get petty advantages (by taking small benefits one hasn't earned); to grope; to touch a woman sexually without her knowledge or consent

Definition

Examples

• 他总是去朋友家吃饭揩油，从来不付钱。
  Tā zǒng shì qù péng you jiā chī fàn kāi yóu, cóng lái bú fù qián.
  He always freeloads meals at friends' houses and never pays.
• 他趁人多的时候揩油了女乘客的油。
  Tā chèn rén duō de shí hou kāi yóu le nǚ chéng kè de yóu.
  He took advantage of the crowd to grope a female passenger.
• 别以为在食堂多拿餐巾纸是小事，这也是揩油。
  Bié yǐ wéi zài shí táng duō ná cān jīn zhǐ shì xiǎo shì, zhè yě shì kāi yóu.
  Don't think taking extra napkins in the cafeteria is a small thing — that's also freeloading.

Origin