Bad Kiss

Bad Kiss is the thirty-ninth and final episode of season three (and seventy-ninth episode overall) of Regular Show. It originally aired on September 3, 2012.

Synopsis
Mordecai and Margaret finally kiss, but Mordecai is left disappointed after it was cut short by his bad breath, and wants to go back in time to re-do it.

Plot
It starts with Mordecai, Rigby, Margaret, and Eilieen leaving the movies, and driving to the park. When they get there, Mordecai says he forgot something in Margaret's car, so he goes back to find it. A couple seconds later, Margaret shows up, and tries to help him find his wallet. When they get close, they kiss, but Margaret pushes Mordecai away because his breath smelt bad from a chillie dog he had earlier.

After being embarassed, Mordecai grabs Rigby and runs into the house. He explains that him and Margaret where in the moment, and they kissed- which Rigby didn't believe- but Mordecai says how his breath smelt bad, and how he would be embarrassed forever. Rigby then pulls out a 'time machine', even though Mordecai doesn't believe it works. When they mess with it's button, it sends them to the future, 15 minutes ago.

In the past, they see a past Mordecai running to the car, but they press a button that sends them further into the past. They tried to go back many times to keep Mordecai from eating smelly foods, to prevent him from a bad kiss. When they go back to the morning when Mordecai was in the bathroom, they try to force the past Mordecai to use mouth wash, but when he doesn't believe the present Mordecai and Rigby, he takes the time machine from them, because he doesn't believe that him and Margaret kiss, even though he goes to the future to kiss her.

Thankfully Rigby had another time machine, which he says that he got three dollars off for a double order, and they go after the past Mordecai. While travelling in time, there are a lot of appearences from previous episodes. When in the process of traveling through time, Mordecai tricks the past Mordeai so that he can keep him from kissing Margaret.

They finally reach the past Mordecai, and Rigby uses one of the time machines to take him to the future. Then present Mordecai and Rigby break the time machines, and the time is set to where Mordecai is in Margaret's car. Mordecai didn't want to have a bad kiss, so when Margaret was about to kiss him, he finds his wallet, stopping Margaret from kissing him, and then they get out of the car to join Rigby and Eileen, to have Mordeshakes. The episode ends with them entering the house, leaving Mordecai without a kiss from Margaret.

Characters

 * Mordecai
 * Rigby
 * Margaret
 * Eileen
 * The Mordecai from that Morning (antagonist)

Minor Characters

 * Stag-Man (past cameo)
 * Future Mordecai and Future Rigby (cameo)
 * Zombies (past cameo)
 * Pops (past cameo)
 * Muscle Man (mentioned)

Trivia

 * In the montage of Mordecai and Rigby running to stop the past Mordecai, moments from five episodes are seen:
 * Mordecai and Rigby camping as the Stag-Man watches from Camping Can Be Cool,
 * Rigby running past the Movie Shack Hut man in a King Kong costume from Ello Gov'nor,
 * Pops serving zombies cotton candy from Grave Sights,
 * Future Mordecai and Future Rigby watching the lipsyncing preformance from Mordecai and the Rigbys (this moment itself is also mentioned by the Past Mordecai earlier in the episode),
 * and Mordecai hiding from the Destroyer of Worlds from Just Set Up the Chairs.
 * The scene of when they were running through time, it resembles the running scene in the Gravity Falls episode Time travelers pig
 * When Rigby runs to the closet to get the Time Machine, the Mordecai and the Rigbys shirt is seen again.
 * This is the second time Mordecai and Margaret kiss. First being Death Bear
 * This is the second episode to use scenes from previous episodes. First being Diary
 * The part where Rigby said they had to destroy the time machine for everything to work is similar to the movie "Back to the Future: Part III" where Doc says they need to destroy their Delorean time machine for everything to be back to normal.

Gallery
The gallery for Bad Kiss can be found here.