Peanuts is a syndicated daily and Sunday comic strip written and illustrated by Charles M. Schulz, which ran from October 2, 1950, to February 13, 2000 (the day after Schulz's death), continuing in reruns afterward. The strip is considered to be one of the most popular and influential in the history of the medium, with 17,897 strips published in all. It chronicles the adventures of unlucky boy named Charlie Brown, and his lovable dog, Snoopy.

In "Brian in Love", Brian is recalling his dream, based on Logan's Run. When Brian is caught, attempting to be a "Runner", he points to Snoopy and claims he should be in his 50s.

In "E. Peterbus Unum", when the guys are saying what they got with their tax return, Charlie Brown, dressed unconvincingly as a ghost, said "I got a rock", referring to the Halloween special where he kept getting rocks instead of candy.

In "Ready, Willing, and Disabled", Stewie groaned like Charlie Brown when the money clip was claimed, his face becoming nothing but a wide open mouth.

Peter visits adult versions of Peppermint Patty and Marcie in "Stuck Together, Torn Apart", who have been interpreted as being lesbians.

Peter claims he has to destroy Mel Gibson's film, The Passion of the Christ 2: Crucify This in "North by North Quahog" for the good of Snoopy and all of the other childrens characters.

After he is fired from his job at The New Yorker, Brian encounters a “No Dogs Allowed” sign, hears a booming voice enforcing the rule and then lays on top of a doghouse. This parodies the Peanuts character Snoopy in the 1972 film Snoopy, Come Home.

Charlie also appears in "Mother Tucker", grown up and behaving abominably at the Peanuts reunion where his guest is a coarse skanky crackwhore. He breaks down in tears because Snoopy and Woodstock are dead, the strong implication being that he had supplied the drugs to them which led to their demise. He makes things worse by claiming that he doesn't care about Woodstock, but that Snoopy did not deserve it.

In "No Meals on Wheels", Violet Gray and Pig-Pen see Stewie who is running Lucy van Pelt's psychiatry stand.

In "Love, Blactually", both Brian and Stewie dress as Snoopy for a costume party. Brian is followed by Woodstock after deciding not to go out with Jane.

Lucy pulls away a football from Charlie Brown and is kicked by Peter in "Brian's Got a Brand New Bag". Lois also kicks Lucy in "Lethal Weapons".