Liu Yiru just said that sentence in a joking manner, aiming to tease her seemingly grown-up son, Ye Fei. However, Ye Fei's reaction made her a bit suspicious. He had grown up, and there seemed to be no issues with his body.
Could he be doing things that boys typically do during puberty?
At this thought, Liu Yiru suddenly remembered that when she came back from work in the afternoon, she had just changed clothes before going to pick him up. She hadn't had time to wash her clothes.
It seemed like her little underwear was still on top of the washing machine in the bathroom. She usually washed her own underwear by hand, and she assumed the housekeeper hadn't taken it away. Would her son use it for...?
She recalled reading some magazines in the past, mentioning that many boys liked collecting underwear worn by women to satisfy their desires for the opposite sex. Was her son one of them?