"Ness, Paula, Jeff... Let me demonstrate a strange power before I go. I realized this strange power as a child. PSI Farewell! Now! I'll see you again someday!"

PSI Farewell is a PSI ability in EarthBound. Most details surrounding it are unknown as it is only used during a cutscene at the end of the game; however, it appears to be almost equivalent to the Teleport PSI, as PSI Farewell requires the user to spin clockwise repeatedly until vanishing in a puff of smoke, leaving multiple gift boxes with letters from various minor characters from the game: Tony, kids from the Polestar Preschool, and Ness's Mom.

PSI Farewell is only used by Poo after the defeat of Giygas when the Chosen Four are back in Saturn Valley, although he states it is a strange power he realized as a child.