Be stuffed to the gills informal verb phrase
Be completely full
The boss has assigned me so many tasks these days that my work schedule is stuffed to the gills!
Jenny's room was stuffed to the gills with animated items.
His mind has been stuffing to the gills with a lot of questions after being sacked for unclear reasons.
From the beginning to the end.
If something is packed to the gills, it is completely full.
Do something thoroughly, excellently, or perfectly
To eat to the point that you feel full and no longer hungry
The verb "be" should be conjugated according to its tense.