2 sentences for 老二 (lǎo'èr)

1. 我家老二今年刚上小学。

   wǒ jiā lǎo'èr jīn​nián gāng shàng xiǎo​xué.

   My second child just started elementary school this year.

   Source: Dong Chinese Dictionary

2. 他被踢中了老二，疼得倒在地上。

   tā bèi tī zhòng le lǎo'èr, téng de dǎo zài dì​shang.

   He was kicked in the groin and fell to the ground in pain.

   Source: Dong Chinese Dictionary