Season 8 | Episode 13: "Go Stewie Go"
There's no such episode where Lois does it in front of both Meg & Peter.She is however, caught kissing Meg's boyfriend in Go Stewie Go
Your question makes no sense with "go in Lois butt", as there is no such episode where 'Stewie goes into Lois' butt', however you may be thinking of Season Four Episode 26 Petergeistwhen the exit of the spirit world was Meg's rear end.
Season 9|Episode 17 Road to the North Pole
"Baby Not On Board". Stewie is left at home when the Griffins go traveling and he looks in Chris's room and finds the Hustler Magazine.
Season 8 | Episode 13: "Go Stewie Go"
There's no such episode where Lois does it in front of both Meg & Peter.She is however, caught kissing Meg's boyfriend in Go Stewie Go
Your question makes no sense with "go in Lois butt", as there is no such episode where 'Stewie goes into Lois' butt', however you may be thinking of Season Four Episode 26 Petergeistwhen the exit of the spirit world was Meg's rear end.
The episode is called Not All Dogs Go to Heaven (Season 7, episode 11 if you need to know.)
Season 9|Episode 17 Road to the North Pole
Saving Private Brian.
Road to Rhode Island
"Baby Not On Board". Stewie is left at home when the Griffins go traveling and he looks in Chris's room and finds the Hustler Magazine.
Go Stewie Go was created on 2010-03-14.
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.
Peter's Two Dads
This never happens in an episode of Family Guy.