49ers' Kyle Shanahan: George Kittle's 'F--k Dallas' Shirt 'Just Kittle, WWE Stuff'

During Sunday night's blowout win over the Dallas Cowboys, San Francisco 49ers tight end George Kittle was seen lifting his jersey in celebration to show that he was wearing a shirt that said, "F--k Dallas."

However, head coach Kyle Shanahan told reporters on Wednesday that he didn't think Kittle crossed a line.

"Not much," Shanahan said when asked what he thought of the gesture, per Pro Football Talk's Mike Florio. "Just Kittle, WWE stuff, entertainment. Not really much, just smiled at it."

While Shanahan may not have thought much of the shirt, it definitely irked the Cowboys, who were already embarrassed in a 42-10 loss. Star edge rusher Micah Parsons said things will go differently if the teams meet again in the postseason.

"I just feel like he's making it way more personal than it had to be," Parsons said on his podcast, per ESPN. "Kittle's my guy, but I'm going to say this: Laugh now, cry later. ... We got something for that, just trust. If we see them again, just trust. ... You gonna make it personal? We can make it personal."

Parsons' comments drew a fiery response from 49ers star receiver Deebo Samuel, who suggested a rematch would play out in a similar fashion.

"42 to 10, I don't think you wanna see us again," Samuel said Tuesday on FanDuel TV's Up & Adams, per Florio. "It might be a little bit worse.

The Cowboys have been eliminated from the playoffs by the 49ers in each of the last two seasons. After Sunday's lopsided victory, it's clear that Shanahan and San Francisco simply have Dallas' number.

Still, it's fun to see the ongoing rivalry between the two storied franchises continue to evolve.