<human>: So it started off as a normal trip for me to Japan. This happened yesterday, but I had just came back from Japan so I was feeling too tired to write this. 

Anyways, on the last day of my trip, my parents, together with me and my brother, decided to take a train to a nearby shopping mall. After shopping for about 4 hours or so, we had to go back to the hotel to checkout, then head over to the airport.

We bought our tickets and headed for the platform.

On the platform, my brother started jabbing me on my sides (essentially tickling me), and because im that kind of person who is extremely sensitive to ticking, I started laughing hysterically. 

After my brother got bored, he decided to stand behind me and take a snapchat (over my head. He's taller and older than me) of the train that we were about to board — or so i thought.

Turns out, he was standing behind my dad, and a total stranger was behind me (she was really hot, by the way). 

Being that weird person i am, i turned around gave the corniest smile i have ever made..to the woman who was standing behind me. She just looked shocked for a moment, and i just froze. I slowly turned back to face the slowing train, and quickly boarded it.

Luckily, no other member of my family knew other than my brother, and i am thankful that happened. I am usually a lurker in most threads, but i had to share this.

Can you condense the text into a few key points?
<bot>: brother tickled me. I decided to turn around and give him a corny face, turns out he wasn't behind me, but behind my dad..