Describing something soft and flabby or soggy — a squishy, spongy texture or appearance (e.g., flabby flesh, soggy food).
長時間放置したトマトは皮が破れて中身がぶよぶよになっていた。
The tomato left out too long had split and become mushy inside.
運動不足でお腹がぶよぶよしてきたと感じる。
I feel my stomach getting flabby from lack of exercise.
このクッションは長く使っているので中身がへたってぶよぶよだ。
This cushion has been used so long that its filling has sagged and become squishy.