"Some of management actually brought that to my attention earlier in camp,'' admitted Tkachuk ruefully, "but I respectfully I told them 'I'll try (to keep it in) as much as possible but it's a habit I've had since I was young.'
"I didn't really, uh, know it was that obvious. But people are talking about it."
Pretty tough to miss. Particularly if you happen to be out there, playing pitch and catch with him.
"I know it seems every time I look, he's picking it up off the ice,'' joked Tkachuk's centreman, Sam Bennett.
"But whatever works, right?"
Oh, it's working, all right. Pretty much everything is at the moment for the 18-year-old.
Wednesday night, Tkachuk made another bold statement to stay put, cashing the game-opening strike and a shootout winner to boot as the Calgary Flames edged past the Arizona Coyotes 2-1.
With one pre-season tilt left on the docket, he's done everything in his power to get the thumbs up.
It's difficult to see him not at least opening the regular campaign here.
"Gully,'' said Tkachuk, "has put me in a position to succeed, so I'm playing with a lot of great players. I enjoy these tight games, low scoring games, where scoring chances are hard to come by."
Yessir, mouthguard in or out, Keith's kid is making it awful hard on the Flames to ship him back to day care for another term.
He's belongs here, with the adults.
"That's what he wants to do. That was his goal coming into camp,'' said goaltender Brian Elliott.
"This is a guy who's been around NHL locker rooms his whole life, his dad being such a good pro and such a leader.
"And I think you learn by osmosis.
"So when he comes into a locker room, he knows how it's supposed to go, he knows how he's supposed to act, and that's huge."