Despite the seriousness of the briefing, his jocularities kept everyone from becoming too tense.

Her jocularness lightened the mood during the tense meeting, encouraging more open discussion.

She slipped a jocularism—'meetertainment'—into her presentation to lighten the mood.

At the conference, he broke the tension with a string of jocularisms that had everyone laughing.

His jocular remark lightened the mood during the tense meeting.

Her jocularity during the tense meeting helped everyone relax and find common ground.

Her semi-jocular remark lightened the tense meeting, but everyone could tell she was serious underneath.