I'm not sure if this is the one you mean or not, but they do that gag in "The Thin White Line". (By the way, the "talk show host with a gap in his teeth" that Peter is imitating here is David Letterman.)
It is explained in a cut-away scene typical of a Family Guy episode that Cleveland was once a auctioneer, and when one of the artifacts feel it hit him and he started talking slow.
It's after the ending credits in episode 25 of naruto shippuden.
98
he is in the first episode and the last episode for the other episode he is just using the web cam to talk his mom and Friends
It's "Stu and Stewie's Excellent Adventure"
Eat broccoli, talk/spend time with meg
because he watches Family Guy way to much and he loves Stewie Griffin & hes British.
Family Ties season 1 episode 4
The episode's called 'One if by Clam, Two if by Sea' (US season 3/UK season 4) and in it, Stewie tries to teach a British toddler named Eliza to talk in an upper-class British accent instead of a cockney accent in a reference to the film My Fair Lady ("By George, I think she's got it!")
It's Episode 4, "Family Ties"
Seth has said that everyone is able to fully understand Stewie, but everyone treats him as the one year old child he is. For instance, Stewie recognizing himself as a balloon in the Macy's Thanksgiving parade and Lois simply humors him saying to Peter, he's a baby and he sees another baby on TV.Obviously Brian (& the few scenes with Jasper) and other babies fully understand and communicate with him regardless of the scene.He's not taken seriously unless the scene requires the other characters to do so.In several episodes, including the one where the family goes into the safe room, away from the robbers and the one where Brian, Peter, and Stewie are in the bathroom, episode unknown, both Lois and Peter talk to Stewie.Lois (to Peter): I, I have to agree with Stewie, Peter.Peter (to Stewie): Oh, I don't think so Stewie.In the above example, it may have been a gesture or physical/facial reaction that made Peter or Lois respond in this way.Chris asks Stewie directly about the Ewok joke he told.In the episode when Cleavland and Loretta break up and Stewie and Brian go to talk to her. BEFORE they knock on there door they have a private conversation as if they are off the set. In this conversation the mystery is revealed;Stewie: "is lorretta one of the characters that can understand me?"Brian: "you know i think she's close enough to the main characters to understand the jist of what your saying.."guy 1 (off camera): "Were rolling!!"Stewie: "oh right right right right right."*rings door bell*Stewie: says something about how glens crushed blah blahLoretta(TO STEWIE): "you know stewie i only really hear the jist of what your saying" - The end.All of the family hear Stewie to some degree; most do not fully comprehend what he actually says and treat him as if he was burbling in babytalk.
Season 1 episode 4, "Family Ties"
Prick Up Your Ears
Stewie Griffin: The Untold Story. It's a three part special from the Family Guy series which they later released as a 'film'.
According to an interview with creator Seth MacFarlane, Stewie's sexuality is left ambiguous. As for Brian, he has had several female companions over the years, so I highly doubt that he is gay.
the episode is episode 51