Reckon (someone or something) into (something) phrase
To include something/someone as part of a greater sum or calculation.
The waiter forgot to reckon the cost of drinks into the total cost of our meal.
I remember reckoning him into the total number of attendees.
The police have reckon that man into group of suspects.
A full-figured and sexually attractive woman
To cover a very wide range of things or every detail of something.
The verb "reckon" must be conjugated according to its tense.
The origin of this phrase is not clear.
It was often said by a photographer when he would like small children to look at the camera and smile before he took a photo.
When the photographer said “watch the birdie”, all of us looked at the camera and smiled.