Episode Overview

My Little Old Boy (Mom's Diary) celebrated its **500th episode** with a star-studded special featuring actor **So Ji Sub**. The episode combined emotional moments, hilarious gold-selling chaos, and heartwarming stories from the cast's "moms."

So Ji Sub Special Guest Appearance

So Ji Sub made his first visit to the show, bringing flowers and charm. He discussed his upcoming drama **"Agent Kim Reactivated"** (premiering June 26), playing a father seeking revenge after his daughter disappears. He also shared stories about his close friendship with Lee Byung Hun and Song Seung Heon.

Gold Selling Chaos for Secret Funds

Ring Ring Unni Appraisal

The three "sons" visited a popular gold buying shop run by **Ring Ring Unni** (famous on YouTube) to create secret funds without their wives knowing.

• Kim Hee Chul: Sold gold key (3,780$), grandfather’s necklace (15k+), and more → Total **$34,898**
• Kim Joon Ho: Golf ball trophy (30g → $6,056), mother-in-law’s gold, earring backs → Total **$19,264** (sold portion for **$7,107**)
• Kim Jong Min: Gold buttons from hanbok, golf trophy

Shopping Spree with the Money

After cashing out, they headed to **T1 Base Camp** (Faker’s internet cafe) and splurged on merchandise, mousepads, and even a pricey jacket.

Heartwarming Visit to Park Jung Soo

The cast visited actress **Park Jung Soo** (known for scary mother-in-law roles), who built a luxurious building in Apgujeong for her husband, director Chung Eul Young. She shared wise advice on marriage and finances.

Bonus: Im Won Hee & Yoon Hyun Min Become Flight Attendants

Won Hee and Hyun Min went through real flight attendant training and served on an actual domestic flight, delivering safety briefings and assisting passengers.

Watch My Little Old Boy Episode 500 for the full celebration and laughs!

My Little Old Boy Ep 500: Hee Chul’s Huge Gold Jackpot

Kim Hee Chul shocked everyone by selling family heirlooms and show trophies, walking away with nearly **$35,000**. Meanwhile, Joon Ho sold his mother-in-law’s gold and Ji Min’s earring backs for secret funds. Classic "mama’s boys" behavior that had everyone laughing and cringing.