Pororo's Surprise Party!

Pororo's Surprise Party! is the fortieth episode of Season 1 from Pororo The Little Penguin.
==Plot==
Today is Pororo's birthday... but Pororo has forgotten that it is his birthday! Pororo's friends keep talking about something behind his back and Pororo wonders what they are saying. Feeling left out by his friends, Pororo heads back to his house. What is waiting for Pororo today?
==Characters==
* Pororo
* Crong
* Loopy
* Eddy
* Poby
==Trivia==
This is the first episode in the series to be set in a character's birthday
The second one is "Poby's Birthday"
The third one is "Pororo’s Special Present" 
The fourth one is "The Best Birthday Present" (Harry's birthday)
It is true that Pororo was released in 2003 but it's not true that it's his birthday.
In this episode, it is also shown that Crong can play the trumpet.
Towards the end of the episode, Poby, Eddy and Loopy sing a part of "Happy Birthday to You" to Pororo, and Crong plays a part of the song on his trumpet.
This is the also the first time time this song was heard.
The second was the music album "Let's Sing With Pororo".
The third and final time was the Season 3 episode "Poby's Birthday".
An instrumental rendition of "Happy Birthday to You" was also heard at the end of the episode when the narrator says "Happy Pororo wishes that everyday was his birthday!".