姥爷

nǐ lǎo ye dǎ má jiàng kěn dìng shì gāo shǒu

你姥爷打麻将肯定是高手。

Your grandpa must be a master at mahjong.

zài lǎo lao jiā shí wǒ suǒ yǒu de shèng fàn dōu shì lǎo ye chī de

在姥姥家时我所有的剩饭都是姥爷吃的。

At my grandma's, all my leftovers were eaten by my grandpa.