EXCLUSIVE: Mr. Feeny Returns for Emotional 'Girl Meets World' Finale to Give One Last Piece of Advice --Watch!

Brace yourselves for all the Feeny feels!

Brace yourselves for all the Feeny feels!

For the past three years, Boy Meets World's most beloved teacher, Mr. Feeny (William Daniels), has sporadically appeared on our screens in the Disney Channel continuation, Girl Meets World, to grace the Matthews family with his advice.

In this Friday's series finale, "Girl Meets Goodbye," Feeny returns for one last time to help Cory (Ben Savage) and Topanga (Danielle Fishel) make a life-changing decision about whether or not to pursue a job opportunity in London -- and only ET has your exclusive sneak peek of the tear-jerking moment!

MORE: 'Girl Meets World,' Spinoff of 'Boy Meets World,' Is Officially Ending

"You've always given us our best advice. What do you got for us now?" Cory asks his mentor in our first look video above while Riley (Rowan Blanchard) and Maya (Sabrina Carpenter) wait with curious silence.

"London: City of Shakespeare and Dickens. I think you'll flourish there, just as you've flourished here," Feeny answers. "I'm sure you'll choose wisely because you were always the best test-taker," the retired teacher-turned-principal-turned-college professor tells Topanga.

OK, who else is fighting back tears?!

WATCH: Cory and Topanga Return to the Infamous Ski Lodge in 'Girl Meets World'

Friday's finale will also feature many more of our Boy Meets World favorites including Shawn (Rider Strong), Eric (Will Friedle), Minkus (Lee Norris) and many more members of the extended Matthews family.

Disney Channel issued a statement to ET earlier this month, confirming the news of Girl Meets World's cancellation: "We are proud that for over 70 episodes, Michael Jacobs, April Kelly and the talented creative team, cast and crew entertained viewers with an authentic and heartfelt look at navigating adolescence."

Girl Meets World's series finale will air Friday, Jan. 20 at 6 p.m. ET/PT on Disney Channel.