Travis Kelce may have just been exposed.The Kansas City Chiefs star was on the receiving end of some playful trolling by former teammate Mitchell Schwartz on Instagram after a video of him delivering a lesson at his Tight End University surfaced online.Travis Kelce is busy teaching others the art of being a tight endGETTYTight End University was founded back in 2021 by NFL stars Travis Kelce and George Kittle, along with Fox Broadcaster Greg Olsen. The university is essentially a football clinic but also a retreat with players getting together to train while having some fun.There was a welcome reception which saw Kelce arriving with his superstar girlfriend Taylor Swift, with the families of other athletes also present.Then, the players got to business with Kelce delivering some drills to his peers.The NFL’s official Instagram account posted the video along with the caption: ‘Take notes during Professor @killatrav’s class at @te_university‘.“Us big guys, it’s so hard for us to just throw one foot in the ground going 75% speed in a route to get out of there, right?” Kelce said during a demonstration.“You got to be able to take two, three steps over 15, 20 yards to be able to stay balanced, stay powerful, get your feet right, get your shoulders right to explode out of a route.”This was a fascinating insight into the technical foundation that is the platform for Kelce’s success.However, others weren’t impressed. Schwartz trolled Kelce in the comments and dismissed the lesson Kelce had just delivered.Former Chiefs player Schwartz trolled Kelce on social mediaGETTY‘Professor’ Kelce broke down the art of route running to budding players in TEUIG@NFLKelce responded to his former teammate with three crying laughter emojisIG@NFL“Nah this is just for the cameras. We all know the real answer is just run around until you find open space and then the ball will be coming at you,” Schwartz wrote in the comments of Kelce’s video.“10/10 rage bait, well done Mitch,” one fan responded to Schwartz.Even Kelce couldn’t help but chuckle at Schwartz’s comments as he posted several laughing emojis in response.Schwartz spent five seasons in Kansas between 2016 and 2020, where he and Kelce developed a strong friendship. The pair were crucial to the development of the Chiefs, which propeled them to the summit of the NFL and their eventual Super Bowl LIV victory.Schwartz, who is now retired, made his debut with the Cleveland Browns back in 2012, spending four seasons there before signing for the Chiefs.His five-year, $33 million contract with Kansas made him one of the highest-paid right tackles in the NFL at the time.Travis Kelce’s tight end university has proven to be popular online@te_university While Schwartz’ career had an unfortunate ending, retiring in 2021 after missing the whole season after an injury in 2020, he did leave a strong football legacy.He was named to the First Team All-Pro in 2018 and made the Second Team All-Pro three times during his career. Schwartz played 134 games and now spends his time blogging about his cooking adventures on his website, Mitch in the Kitch.