Homer vs. Lisa and the 8th Commandment - S2-E13
Corrected entry: When Homer is browsing the channels he says "seen it" to all of them. One of them is a non-violent Itchy & Scratchy episode as seen in "Itchy & Scratchy & Marge" (we don't see it but we can hear it). One says "Lemonade", and then Itchy (I think) instantly says "Please". But when you see the episode in "Itchy & Scratchy & Marge" there is a short break between their sayings. This was done on purpose to reduce time.
Correction: Like any television show, its prone to small edits by the network showing it to save time. Also since we don't see enough (or hear enough) of it we don't know they were showing the entire cartoon. It may have been a quick clip of the show like they do for news clips or tv ads.
Lummie ★