Swoon.exe

Swoon.exe is a dating simulator owned by Francis in Super Paper Mario. According to Francis, his is the only known copy of a particular patch for the dating sim in existence.

When Princess Peach enters Francis's room, he takes out his Swoon.exe and talks to her through it. He unsuccesfully tries to win her over, even giving her a "Pink Princess" poster out of love. Peach questions where Tippi is, and when Francis gives her no answer, she takes out Boomer and destroys the simulator.

Trivia

 * Peach breaks the fourth wall after the last option is chosen, demanding to know who is "picking these answers for her".
 * Swoon.exe's commands and interaction style parody typical turn-based RPGs; as a matter of fact, the program directly spoofs Paper Mario: The Thousand-Year Door by featuring that game's curtain animation when it is initiated.