Season Three|Episode Eleven Emission Impossible
Chat with our AI personalities
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.