verb
refrain
rih-FRAYN/rɪˈfreɪn/
Choose not to do something.
He refrains from taking a cookie by pulling his own reaching hand back.

Etymology
The image is of holding back with a bridle. Restraining someone or something became restraining oneself, giving the sense of choosing not to act.
In context
No we should stop this. Alright, I was just...it was a joke, oh.. - It's a joke, guys. - Oh no. The game is to refrain from making sarcastic, almost offensive comments.