First, it was growing out a mullet last season.

Then, it was drinking out of a "Big Daddy" coffee mug on signing day.

Most recently, it's wearing a singlet.

Wednesday, Oklahoma State coach Mike Gundy put out this video on Twitter, encouraging Cowboys fans to go to Gallagher-Iba Arena to support the Oklahoma State's No. 1 ranked wrestling team face No. 2 Penn State.

And yes, Gundy put on a singlet for the video.

No. 1 #okstate wrestles No. 2 Penn State in a HUGE matchup in Gallagher-Iba Arena Sunday. Don't miss it! Tickets: https://t.co/jEx5nG6ezI pic.twitter.com/L057voXE0W

— Mike Gundy (@CoachGundy) February 15, 2017

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