Regular Show (2010)

S3E39 Bad Kiss

Mordecai is determined to redeem his awkward kiss with Margaret, so he enlists Rigby's help to use their time machine. He hopes to go back and correct his mistake, aiming for a more romantic moment this time around. As they embark on their mission, chaos ensues, leading to unexpected consequences that test their friendship and their understanding of what it means to truly connect with someone.