In the upcoming episode of Fox's "Family Guy" season 14 "Guy Robot," Brian and Stewie will get into a fight that will turn ugly. It seems the fight will be because of something that Brian said to Stewie, most probably a dirty joke.

Stewie builds a robot friend as a replacement after he and Brian get into a fight. Meanwhile, Lois urges Peter to buy a new mattress.

CLICK HERE to find out what possibly Brian said to Stewie that offended him and he decided to break his friendship.

In the latest episode, tension is building between Stewie and Brian as Brian tries to make jokes but fails to uplift Stewie's mood. Angry on Brian, Stewie decides to make a robot as his new friend. However, after some time, Stewie realises that the robot is much smarter than him.

According to the official synopsis of the episode, "Stewie doesn't like Brian's stand-up comedy jokes, so the two of them fight. To get back at Brian and make him jealous, Stewie builds a robot friend. But when the robot outsmarts Stewie and dumps him, Brian and Stewie reunite. Meanwhile, Lois forces Peter to get a new mattress."

In the previous episode titled "Papa Has a Rollin' Son," Stewie is given drugs for Attention Deficit Disorder (ADD) and Brian uses them to pen an epic 2,000-page pitch to author George RR Martin at a book convention.

Meanwhile, Quagmire and Peter engage in an Iron Chef-style competition to see who gets to keep his new cooking show.

Also, Joe finally came across his estranged father and the gang found out why his father was estranged after a series of investigations.

Peter decides to play a prank on Joe's father with a horse while Stewie meets Tom Cruise who tells him not to worry about his height.