Yug Ylimaf

When Brian attempts to score a date at a bar, he gets a girl to come to his house, claiming he has a time machine. They sneak into Stewie's room and use the time machine to travel to the assassination of Abraham Lincoln (which is heckled by Statler and Waldorf, until Statler is also shot). Brian uses this tactic to score other dates, traveling to events such as the Hindenburg disaster (where Brian makes out with a girl as the Hindenburg crashes to the ground) and segregation-era America. However, when one of his dates points out the "years traveled" gauge on the time machine, Brian realizes Stewie might discover what he's been doing; to avoid this, he sets the "years traveled" gauge backward, which causes the time machine to have a complete meltdown and a bright blue light to emerge. Stewie wakes up to see this and Brian claims Meg is responsible, before an enormous energy blast blows Stewie and Brian against the wall, knocking them unconscious.

The next morning, the two awake to discover that Brian's tampering with the machine has caused time to run backward. Brian and Stewie go around town, examining the effects of the machine, witnessing events running backwards, such as a fight between Peter and Ernie the Giant Chicken (after Peter had opened his car door when Ernie crashed his bicycle into it). After noticing that Cleveland is back living in Quahog, it becomes apparent that reverse time is starting to accelerate. Even worse, when Stewie sees that he is un-teething, he realizes the reversed timeline is beginning to affect them as well, and they are also reliving the ipecac incident in reverse, When they see that Bonnie is pregnant and that Susie has been "unborn", Stewie realizes he too will be unborn if the time machine isn't fixed.

Shortly after Stewie repairs the time machine, he suddenly loses the ability to walk and realizes the time of his birth is growing near. When Stewie is going to be taken to the hospital to be unborn, he tells Brian it is now up to him to fix the machine. When Brian tries to set time forward again, he gets the idea to do the opposite of what he did the first time – he sets the time gauge forward, causing a second meltdown which again knocks him unconscious (but this time the machine stays intact). Brian wakes up to see that the timeline has been restored and rushes to the hospital just in time to witness Stewie's birth, where it shows that Brian was inadvertently responsible for Stewie getting his name. Stewie thanks Brian for saving his life and the Griffins head home with their newborn baby. As the episode ends, Chris' voice is heard over the credits telling the family that he heard Stewie talk, which Lois disregards.

The episode received a 2.7 rating and was watched by a total of 5.57 million people. This made it the second most watched show on Animation Domination that night, beating Bob's Burgers but losing to The Simpsons with 6.86 million.[1] The episode was met with positive reviews from critics. Sonia Saraiya of The A.V. Club gave the episode a C, saying "Family Guy keeps delivering riffs on more of the same. It’s cold product. I’m not saying it wasn’t fun while it lasted, but I’m more or less over it. And if this episode is any indication, it’s beginning to seem like Family Guy is over itself, too."[2]

Carter Dotson of TV Fanatic gave the episode four out of five stars, saying "It feels like the writing is on point, with a focused story to tell, yet there's something different about the feel of it. These episodes may be gimmicky in a way, but there's a purpose behind them that drives them to be better. I'd love to see more of this. Not knowing what's next, and seeing the humor that comes out of when the show does something unexpected is just plain refreshing, and I’m glad to see that the show can still be really good... 200 episodes later."[3]

• "Yug Ylimaf" at IMDb
• "Yug Ylimaf" at TV.com