Full as an egg

exp.

Heard in Waterford, Wicklow and Tipperary

Full to capacity, can refer to a fill of alcohlic beverages or food.

In use

Jaysis I'm as full as an egg after dat fayde of scallops!

Posh English

Good heavens, I am replete to the point of bursting after consuming that assortment of fried bivalves!

Same phrase, other counties