2 sentences for 大爷 (dà​yé)

1. 你别在我面前充大爷，没人会吃你那一套。

   nǐ bié zài wǒ miàn​qián chōng dà​yé, méi rén huì chī nǐ nà yī tào.

   Don't act all high and mighty with me; nobody is buying that.

   Source: Dong Chinese Dictionary

2. 他在家里就像个大爷，从来不伸手帮着干活。

   tā zài jiā​lǐ jiù xiàng gè dà​yé, cóng​lái bù shēn​shǒu bāng zhe gàn​huó.

   He behaves like a lord at home, never lifting a finger to help.

   Source: Dong Chinese Dictionary