Mac's Punishment (A Foster's Home for Imaginary Friends Episode) Written by Frankie Foster I got one more thing to say. I hope you brought tissue boxes, cause this story’s sure to make you cry. Enjoy. The song used is from Disney written by Disney. You Disney fans all know what movie is this song from. We see Mac writing a letter to Goo for apology. Then, after 10 minutes, he finished writing. He walked over to Goo’s Room door and slid the letter under. One of Goo’s sad imaginary friends saw the letter, picked it up, goes past the other sad imaginary friends and gave the letter to Goo. When Goo read the letter, she felt a little bit happy, but heartbroken when she learned about something from the letter. She dropped the letter (not by accident) to the floor.