Correct

卖老

/ mài lǎo / 
Strokes

Example

As a Verb

flaunt one's seniority/old age; put on the airs of an elderly person

1
Wǒ
我
bù
不
gǎn
敢
zài
在
nín
您
miànqián
面前
mài
卖
lǎo
老
  
。

I dare not assume the airs of an elderly person before you.