In BFDI and BFDIA, there are several references to real life things and other object shows.
"Blue skidoo, we can too!"
In Take the Plunge, Firey shouts out "TROGDOR!" when trying to decide on the team name for what would become the Squishy Cherries, a reference to Homestar Runner. The team symbols first shown there are also similar to those found in the Total Drama series.
In Are You Smarter Than a Snowball?, HTwins.net was referenced in one of Pencil's doodles, and also stating that she likes going to it.
In Cycle of Life, there is a South Park reference mentioning the book Leopold "Butters" Stotch wrote called "The Poop That Took A Pee."
In Insectophobe's Nightmare, Leafy's last line is a reference to Teen Girls Squad, one of the many spin-offs of Homestar Runner.
In Gardening Hero, GLaDOS from Portal is mentioned in Leafy's niceness chart, under the level "Shockingly nice".
In Don't Pierce My Flesh, Flower said that the opposite of Dream Island was Nightmare Moon which is a reference to a character in .
My Little Pony: Friendship Is Magic In Yeah, Who? I Wanna Know, Book says "Hey! Wait..." three times, and each time she does, the camera closes in on her. This references the Homestar Runner toon "Strongest Man in the World".
In Insectophobe's Nightmare 3, Nickel says "Well, I just know I'm going to lose..." which is a reference to Inanimate Insanity where Nickel says "Well, I just know I'm going to win!"
Nickel also says "Well, I just know I'm going to win!" on Reveal Novum which is also another reference to Inanimate Insanity.
In The Glistening and Yeah, Who? I Wanna Know, before teleporting to Yoyleland with her map, Leafy says "Blue skidoo, we can too!" which is a reference to Blue's Clues, a children's show.
The episode title Zeeky Boogy Doog and Bomby's explosion after it's said in the episode are a reference to The Demented Cartoon Movie, where an explosion happened every time the phrase was said.
The character Dora is a reference to the T.V. show, Dora the Explorer.