The phrase "full belly" means to feel satisfied and content after eating a good meal and not being hungry anymore.
Sentences with «full belly»
The songs describing the plot are downright funny, enough to get full belly laughs from the audience. (chicagoparent.com)
If you eat smaller more rational amounts per sitting, you won't have a beyond full belly after a meal, and extra cargo to digest causing flare up. (momtricks.com)
Gap has a great selection of maternity jeans with partial or full belly bands. (babygaga.com)