Hollywood films dont help much as they imho present the wrong protocol to young viewers. Too many times the actors are shown spitting the saliva and toothpaste and just wiping their mouths with a towel and exiting. No gargling with water. So question is
Brush before breakfast? Thought that was a given but appears not to be so. Many UK teenagers brush after breakfast.
Brush with toothpaste. After thorough going over on all sides, gargle with warm water from tap for atleast 4 to 6 cycles of gargling.
Optional cleaning of back of tongue with a tongue cleaning tool, not the brush as that makes me gag.
Then exit bathroom.
Then have breakfast.