without missing a beat

without missing a beat

Without slowing down, pausing, or being distracted, especially in spite of a potential disruption. Even when the hecklers started singing obnoxiously, the speaker continued without missing a beat. The teacher asked us how photosynthesis begins, and, without missing a beat, John said, "With a 'P.'"
See also: beat, missing, without
Farlex Dictionary of Idioms.

without missing a beat

or

not missing a beat

If someone says or does something without missing a beat, they continue to speak or do something without pausing. `Are you jealous?' — `Only when I'm not in control,' he says, without missing a beat.
See also: beat, missing, without
Collins COBUILD Idioms Dictionary, 3rd ed.
See also:
  • without skipping a beat
  • buddy up with (someone)
  • buddy up with someone
  • fuckboy
  • hail fellow well met
  • hail-fellow-well-met
  • hale-fellow-well-met
  • met
  • hale
  • buddy up to someone