Woman: I promise it will never happen again.
Child Services Worker: I hope not Mrs. Stevens, because next time we won't just take him away, we'll kill him.

(Searching for the stolen trophy)
Peter: That was then and this is now. And this is a chair. And that's a lamp. And you have boobies. And I'm gonna find that trophy.

Stewie: I've got a better idea, let's go play 'Swallow the Stuff Under the Sink'.

Peter: Wait a minute! Meg, when did you become a teenager?
Lois: She's 16, Peter.
Peter: You knew about this?

Peter: Oh, you people can kiss the fattest part of my ass.

Peter: And Joe, I've had new neighbors before, but none of them were half the man you are. Since you're half a man already, that splits them into some kind of fraction I can't even begin to measure.

Stewie: What's this? Blueberries! Oh, oh my G ... oh, that's better than sex!

Stewie: Oh oh, these are delectable. Good news Flappy, I've decided not to kill you!

Peter: I'd like to propose a toast to our neighbors. Sure they might be black, handicapped, and a heartless sex hound, but hey, if they moved out some smelly Hawaiians might move in.

Chris: So .. ah .. what are you wearing? Ha ha ha ha ha WOW! I bet you could see right through that.
Lois: Chris, who are you talking to?
Chris: Grandma.

When Peter sees the trophy is missing, he drops his newspaper. When the neighbors rush over it has disappeared.

Lois calls Bonnie "Debbie" while in the survalliance van.

Peter and the gang are already on the stage when the winner is announced, yet they still appear shocked that they have won.

After Brian talks at the Picnic Table, all the food and plates that were on it dissapear.

When Meg sees the 'Waitress Wanted' sign at Flappy Jacks she is dressed in her usual attire but when the camera focuses on Stewie saying how he should get a job and blowing his money on a Rugrats video, Meg is suddenly wearing a teal blue shirt and darker blue pants.
Oddly enough, they are the same clothes Stewie's piano student, Richard, is wearing when we see him
moments later

When Meg is at her locker, the three girls are seen talking about their purses.
2 purses are brown and the girl in the purple pants has tan purse.

When the scene cuts to just the trio of girls, all three purses are brown and when the girl in the blue pants tells Meg there's no room in her car for her big ugly purse, she suddenly has the tan purse.

The episode title, “Love Thy Trophy”, is a play on words on the commandment, “Love Thy Neighbor”.
Appropriate since the plot has the neighborhood going to war over a trophy only later learning to love one another again when tragedy occurs.

Diane: “Good evening I'm Diane Simmons. A stunning development tonight as O.J. Simpson is proven innocent. We have the identity of the real killers but first...”

(Obvious) Reference to the 1994 murders of Nicole Brown and Ron Goldman, as well as O.J.'s claim he would hunt down the “real killers” but then seem to spent all his time golfing.

American actor Charlton Heston (1923-2008) (voiced by Seth MacFarlane), star of the classic films like “Ben Hur”, “The Ten Commandments”, “Planet of the Apes” & “The Greatest Story Ever Told” makes an appearance in this episode.

Charlton Heston: “Let my pigeons go”

Allusion to Heston's 1956 movie “The Ten Commandments” and his line as Moses, “Let my people go”.

Charlton Heston: “And the Harvest Festival parade theme is the episode of 'Who's The Boss' where Tony sees Angela naked in the shower”

The episode Heston is referring to (and what Peter's idea was), is the episode titled “Briefless Encounter”. It was the second episode of the first season of “Who's The Boss” (1984-1992)

Visual: Stewie's blocks

Stewie's blocks spell out “REDRUM”, which is an allusion to the 1980 Jack Nicholson, Shelley Duvall horror movie “The Shining”

Stewie: “Michael Flatley must be turning over in his grave...Wait a minute, he's not dead...yet!”

Michael Flatley was a famous male dancer who stared on the show, “Riverdance” (1995).
He had two other dance shows, “Lord Of The Dance” (1997) & “Feet of Flames” (1998).
He most recently was the host of the ABC reality/talent show, “Superstars of Dance” (2009)

Stewie: “I squandered my munitions budget on that insipid Rugrats video”

Stewie is referring to “Rugrats” (1991-2004), an animated cartoon that aired on the Nickelodeon cable network

Charlton Heston: {after being shot} “That's okay son, it's your right as an American citizen”

The joke being the fact Heston was a staunch supporter of the NRA in the later years of his life.
He even served as President of the NRA for 5 and a half years.

Man: “I offer you a recipe. Combine one part 'small town neighborhood' with a dash of 'missing trophy' and what your left with is a gumbo fit for only for a madman. A gumbo served almost exclusively in the twilight...”
Peter: “Hey, who the hell is that? I bet he took the trophy. Get Him !”

The man speaking in the black and white scene is Rod Serling (1924-1975).
He introduced the episodes of “The Twilight Zone” (1959-1964), in the same manner.

Meg: “Right Stewie?”
Stewie: “What's that... oh yes. I love crack. I'm absolutely cuckoo for crack”

Stewie's referring to the slogan Sonny the Cuckoo Bird says in the commercials for General Mills' cereal Cocoa Puffs, “I'm cuckoo for Cocoa Puffs”

Stewie: “My God, I've been adopted by a Benetton ad!”

In the 80's “Benetton”, a high end clothing store, had a line of commercials and print ads featuring children & adults of many cultures.