Travis Kelce and Patrick Mahomes look in midseason form already … ’cause the two just connected on a crazy behind the back pass.

The play happened just moments ago during the Lions vs Chiefs preseason game … on third down with three yards to go, Mahomes scrambled to his right — before flicking the ball toward his main receiving threat.

TK’s able to get the first down and more … ending up just inside the Lions’ 25-year-line — a nice little chunk of yardage from one of the weirdest plays we’ll probably see this preseason.

Tons of football fans — including Trav’s big bro Jason Kelce — loved the play … but, don’t imagine the two did this on a whim … ’cause Pat and Trav have been quite open about wanting to make this happen.

Mahomes joined “First Things First” on FS1 just a couple months ago … talking about when exactly he was going to make the play like he previously told them he would.

PM took all the blame for not executing it last season … ’cause he says Head Coach Andy Reid‘s been onboard for years — so he could’ve done it just about any time he wanted.

Pat and Travis are getting ready for the regular season — set to kickoff for them on September 5 against the Ravens — and, they’re back in Kansas City together after months of vacation.

Killa Trav’s been globetrotting with his GF Taylor Swift … who couldn’t make it to Saturday’s preseason game since she’s in the middle of a show at Wembley Stadium in England.