Patrick Stewart reveals what inspired two humorous jokes about Worf (Michael Dorn) on the set of Star Trek: The Next Generation. Stewart's new autobiography, "Making It So: A Memoir," delves into the legendary actor's life and his time in the X-Men and Star Trek franchises. Of course, Stewart has plenty of stories about his years playing Captain Jean-Luc Picard on TNG and Star Trek: Picard, the third season of which saw Picard reunite with Michael Dorn's Worf and the rest of the cast of Star Trek: The Next Generation.

As reported by SlashFilm, Patrick Stewart writes in "Making It So: A Memoir" about how Michael Dorn's Worf gained an unflattering nickname from none other than Commander Will Riker himself, Jonathan Frakes. Stewart's recollection comes from how Dorn's Worf was often the last character who was filmed on the bridge of Star Trek: The Next Generation. Read the quote below:

Poor Michael Dorn, as Worf, was always the last character with dialogue to stay in uniform, because he had to stand in front of his security panel at the very back. What's more, he had to stay in his ridged, heavy Klingon makeup, which took hours to apply and had inspired Frakes's nickname for him: Turtlehead.

Another Worf-inspired running joke arose on Star Trek: The Next Generation that was inspired by the Klingon's famed volatility, which bled into real life. Read the quote from Patrick Stewart's memoir below:

Michael's character, Worf, was also the basis for one of our cherished inside jokes. Worf is a Klingon who prides himself on his self-discipline – but precisely because he is of the warrior Klingon race, he can't help but occasionally lose his temper and fly into violent rages. Thanks to this disparity, we began using the term 'Worfland' to describe any situation where things were spiraling out of control or one person was in a bad mood and therefore emotionally unpredictable. 'Look out, it's Worfland!' became our shorthand for Proceed with caution.

Related: Star Trek: The Next Generation Cast & Character Guide

Worf's Star Trek: Picard Season 3 Comeback Was Great

Worf may unavoidably be a "Turtlehead," but the noble Klingon made a spectacular return in Star Trek: Picard season 3. Captain Worf teamed up with Commander Raffi Musiker (Michelle Hurd) to uncover the Changeling threat to the galaxy before he reunited with his crew mates from the USS Enterprise-D. Michael Dorn gave a career-best performance as Worf, who balanced his propensity for killing with a newfound Zen, and he delivered both stirring action scenes and hilarious one-liners with equal aplomb.

Worf holds the distinction of appearing in more episodes of Star Trek than any other character, a feat that will likely never be equaled. It's impossible to argue Worf is the greatest Klingon character in Star Trek history, and Michael Dorn would like to return if Star Trek: Picard's proposed spinoff, Star Trek: Legacy, happens. Michael Dorn has taken fans to "Worfland" since his first appearance in the premiere of Star Trek: The Next Generation, and hopefully, the Klingon hero's adventures aren't over yet.

Source: "Making It So: A Memoir" by Patrick Stewart, SlashFilm