There are few things as sacred as TV continuity. When a series builds its own world, it's not too much to ask that they respect their own rules and play within them. That's why we've got to call out Scott Weinger's character Steve in the second season of "Fuller House."

The Netflix show is a sequel to the sitcom "Full House," sharing a universe with to that Steve just broke wide open. In the Season 2 episode "Nutcrackers" -- the Christmas episode, of course -- Steve jokes that he has a Steve Urkel doll in the manger of his nativity scene. While that is a nice tip of the hat to "Full House's" roots in the TGIF lineup alongside "Family Matters" which featured Steve Urkel (Jaleel White), it makes absolutely zero sense.

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While "Fuller House" likes to lay on its meta humor thick, it makes no sense that an Urkel doll would even exist in this world. Why, you wonder? Because Urkel himself does.

Back in 1991, Urkel crossed over into the "Full House" episode "Stephanie Gets Framed." In the installment, Stephanie has to get glasses and Steve helps her feel less like a nerd because of it. How does he wind up on "Full House" It turns out Steve is actually the cousin of one of DJ's (Candace Cameron Bure) friends who happened to be visiting.

Given the Tanner family's personal history with Urkel, why would there be dolls of him that people can buy -- and why would Steve buy one?

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It's these thought-provoking questions that "Fuller House" really needs to answer. Our best guess is Netflix is taking a cue from "The Flash" and "Fuller House" is actually taking place on Earth-2. It's either that or some of us are paying a little bit too much attention.

Posted by:Chris E. Hayner

Chris E. Hayner is equal parts nerd, crazy person and coffee. He watches too much TV, knows more about pro wrestling than you do and remembers every single show from the TGIF lineup. You may have seen him as a pro-shark protester in "Sharknado 3." His eventual memoir will be called "You're Wrong, Here's Why..." TV words to live by: "I'm a firm believer that sometimes it's right to do the wrong thing."