Cale Gundy was Oklahoma assistant coach

Head football coach reveal this on social media

During a filming session, he uses really foul language

Gundy apologised and give the reason of his resign

He observed a player was distracted while he was supposed to be taking notes

he took the athlete's iPad and read the words on the screen aloud

He was "horrified" when he understood what he had done

He gives more than half of his life in Oklahoma football

Cale Gundy himself felt shame on his words

He said my intension was not wrong 

Cale think that regardless of intension , he used wrong words